20211005640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1\times {\mathrm{463}}^1$

素因数の和:972

約数の個数: 256

約数和(自身を含む): 70098001920

約数和(自身を除く): 49886996280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 157, 168, 210, 280, 314, 331, 420, 463, 471, 628, 662, 785, 840, 926, 942, 993, 1099, 1256, 1324, 1389, 1570, 1655, 1852, 1884, 1986, 2198, 2315, 2317, 2355, 2648, 2778, 3140, 3241, 3297, 3310, 3704, 3768, 3972, 4396, 4630, 4634, 4710, 4965, 5495, 5556, 6280, 6482, 6594, 6620, 6945, 6951, 7944, 8792, 9260, 9268, 9420, 9723, 9930, 10990, 11112, 11585, 12964, 13188, 13240, 13890, 13902, 16205, 16485, 18520, 18536, 18840, 19446, 19860, 21980, 23170, 25928, 26376, 27780, 27804, 32410, 32970, 34755, 38892, 39720, 43960, 46340, 48615, 51967, 55560, 55608, 64820, 65940, 69510, 72691, 77784, 92680, 97230, 103934, 129640, 131880, 139020, 145382, 153253, 155901, 194460, 207868, 218073, 259835, 278040, 290764, 306506, 311802, 363455, 363769, 388920, 415736, 436146, 459759, 508837, 519670, 581528, 613012, 623604, 726910, 727538, 766265, 779505, 872292, 919518, 1017674, 1039340, 1072771, 1090365, 1091307, 1226024, 1247208, 1453820, 1455076, 1526511, 1532530, 1559010, 1744584, 1818845, 1839036, 2035348, 2078680, 2145542, 2180730, 2182614, 2298795, 2544185, 2907640, 2910152, 3053022, 3065060, 3118020, 3218313, 3637690, 3678072, 4070696, 4291084, 4361460, 4365228, 4597590, 5088370, 5363855, 5456535, 6106044, 6130120, 6236040, 6436626, 7275380, 7632555, 8582168, 8722920, 8730456, 9195180, 10176740, 10727710, 10913070, 12212088, 12873252, 14550760, 15265110, 16091565, 18390360, 20353480, 21455420, 21826140, 24060721, 25746504, 30530220, 32183130, 42910840, 43652280, 48121442, 61060440, 64366260, 72182163, 96242884, 120303605, 128732520, 144364326, 168425047, 192485768, 240607210, 288728652, 336850094, 360910815, 481214420, 505275141, 577457304, 673700188, 721821630, 842125235, 962428840, 1010550282, 1347400376, 1443643260, 1684250470, 2021100564, 2526375705, 2887286520, 3368500940, 4042201128, 5052751410, 6737001880, 10105502820, 20211005640]

約数ペア:

[(1, 20211005640), (2, 10105502820), (3, 6737001880), (4, 5052751410), (5, 4042201128), (6, 3368500940), (7, 2887286520), (8, 2526375705), (10, 2021100564), (12, 1684250470), (14, 1443643260), (15, 1347400376), (20, 1010550282), (21, 962428840), (24, 842125235), (28, 721821630), (30, 673700188), (35, 577457304), (40, 505275141), (42, 481214420), (56, 360910815), (60, 336850094), (70, 288728652), (84, 240607210), (105, 192485768), (120, 168425047), (140, 144364326), (157, 128732520), (168, 120303605), (210, 96242884), (280, 72182163), (314, 64366260), (331, 61060440), (420, 48121442), (463, 43652280), (471, 42910840), (628, 32183130), (662, 30530220), (785, 25746504), (840, 24060721), (926, 21826140), (942, 21455420), (993, 20353480), (1099, 18390360), (1256, 16091565), (1324, 15265110), (1389, 14550760), (1570, 12873252), (1655, 12212088), (1852, 10913070), (1884, 10727710), (1986, 10176740), (2198, 9195180), (2315, 8730456), (2317, 8722920), (2355, 8582168), (2648, 7632555), (2778, 7275380), (3140, 6436626), (3241, 6236040), (3297, 6130120), (3310, 6106044), (3704, 5456535), (3768, 5363855), (3972, 5088370), (4396, 4597590), (4630, 4365228), (4634, 4361460), (4710, 4291084), (4965, 4070696), (5495, 3678072), (5556, 3637690), (6280, 3218313), (6482, 3118020), (6594, 3065060), (6620, 3053022), (6945, 2910152), (6951, 2907640), (7944, 2544185), (8792, 2298795), (9260, 2182614), (9268, 2180730), (9420, 2145542), (9723, 2078680), (9930, 2035348), (10990, 1839036), (11112, 1818845), (11585, 1744584), (12964, 1559010), (13188, 1532530), (13240, 1526511), (13890, 1455076), (13902, 1453820), (16205, 1247208), (16485, 1226024), (18520, 1091307), (18536, 1090365), (18840, 1072771), (19446, 1039340), (19860, 1017674), (21980, 919518), (23170, 872292), (25928, 779505), (26376, 766265), (27780, 727538), (27804, 726910), (32410, 623604), (32970, 613012), (34755, 581528), (38892, 519670), (39720, 508837), (43960, 459759), (46340, 436146), (48615, 415736), (51967, 388920), (55560, 363769), (55608, 363455), (64820, 311802), (65940, 306506), (69510, 290764), (72691, 278040), (77784, 259835), (92680, 218073), (97230, 207868), (103934, 194460), (129640, 155901), (131880, 153253), (139020, 145382)]