21620940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 192

約数和(自身を含む): 73156608

約数和(自身を除く): 51535668

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 41, 44, 47, 51, 55, 60, 66, 68, 82, 85, 94, 102, 110, 123, 132, 141, 164, 165, 170, 187, 188, 204, 205, 220, 235, 246, 255, 282, 330, 340, 374, 410, 451, 470, 492, 510, 517, 561, 564, 615, 660, 697, 705, 748, 799, 820, 902, 935, 940, 1020, 1034, 1122, 1230, 1353, 1394, 1410, 1551, 1598, 1804, 1870, 1927, 2068, 2091, 2244, 2255, 2397, 2460, 2585, 2706, 2788, 2805, 2820, 3102, 3196, 3485, 3740, 3854, 3995, 4182, 4510, 4794, 5170, 5412, 5610, 5781, 6204, 6765, 6970, 7667, 7708, 7755, 7990, 8364, 8789, 9020, 9588, 9635, 10340, 10455, 11220, 11562, 11985, 13530, 13940, 15334, 15510, 15980, 17578, 19270, 20910, 21197, 23001, 23124, 23970, 26367, 27060, 28905, 30668, 31020, 32759, 35156, 38335, 38540, 41820, 42394, 43945, 46002, 47940, 52734, 57810, 63591, 65518, 76670, 84788, 87890, 92004, 98277, 105468, 105985, 115005, 115620, 127182, 131036, 131835, 153340, 163795, 175780, 196554, 211970, 230010, 254364, 263670, 317955, 327590, 360349, 393108, 423940, 460020, 491385, 527340, 635910, 655180, 720698, 982770, 1081047, 1271820, 1441396, 1801745, 1965540, 2162094, 3603490, 4324188, 5405235, 7206980, 10810470, 21620940]

約数ペア:

[(1, 21620940), (2, 10810470), (3, 7206980), (4, 5405235), (5, 4324188), (6, 3603490), (10, 2162094), (11, 1965540), (12, 1801745), (15, 1441396), (17, 1271820), (20, 1081047), (22, 982770), (30, 720698), (33, 655180), (34, 635910), (41, 527340), (44, 491385), (47, 460020), (51, 423940), (55, 393108), (60, 360349), (66, 327590), (68, 317955), (82, 263670), (85, 254364), (94, 230010), (102, 211970), (110, 196554), (123, 175780), (132, 163795), (141, 153340), (164, 131835), (165, 131036), (170, 127182), (187, 115620), (188, 115005), (204, 105985), (205, 105468), (220, 98277), (235, 92004), (246, 87890), (255, 84788), (282, 76670), (330, 65518), (340, 63591), (374, 57810), (410, 52734), (451, 47940), (470, 46002), (492, 43945), (510, 42394), (517, 41820), (561, 38540), (564, 38335), (615, 35156), (660, 32759), (697, 31020), (705, 30668), (748, 28905), (799, 27060), (820, 26367), (902, 23970), (935, 23124), (940, 23001), (1020, 21197), (1034, 20910), (1122, 19270), (1230, 17578), (1353, 15980), (1394, 15510), (1410, 15334), (1551, 13940), (1598, 13530), (1804, 11985), (1870, 11562), (1927, 11220), (2068, 10455), (2091, 10340), (2244, 9635), (2255, 9588), (2397, 9020), (2460, 8789), (2585, 8364), (2706, 7990), (2788, 7755), (2805, 7708), (2820, 7667), (3102, 6970), (3196, 6765), (3485, 6204), (3740, 5781), (3854, 5610), (3995, 5412), (4182, 5170), (4510, 4794)]