20577480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 256

約数和(自身を含む): 82114560

約数和(自身を除く): 61537080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 17, 20, 21, 22, 24, 28, 30, 33, 34, 35, 40, 42, 44, 51, 55, 56, 60, 66, 68, 70, 77, 84, 85, 88, 102, 105, 110, 119, 120, 131, 132, 136, 140, 154, 165, 168, 170, 187, 204, 210, 220, 231, 238, 255, 262, 264, 280, 308, 330, 340, 357, 374, 385, 393, 408, 420, 440, 462, 476, 510, 524, 561, 595, 616, 655, 660, 680, 714, 748, 770, 786, 840, 917, 924, 935, 952, 1020, 1048, 1122, 1155, 1190, 1309, 1310, 1320, 1428, 1441, 1496, 1540, 1572, 1785, 1834, 1848, 1870, 1965, 2040, 2227, 2244, 2310, 2380, 2618, 2620, 2751, 2805, 2856, 2882, 3080, 3144, 3570, 3668, 3740, 3927, 3930, 4323, 4454, 4488, 4585, 4620, 4760, 5236, 5240, 5502, 5610, 5764, 6545, 6681, 7140, 7205, 7336, 7480, 7854, 7860, 8646, 8908, 9170, 9240, 10087, 10472, 11004, 11135, 11220, 11528, 13090, 13362, 13755, 14280, 14410, 15589, 15708, 15720, 17292, 17816, 18340, 19635, 20174, 21615, 22008, 22270, 22440, 24497, 26180, 26724, 27510, 28820, 30261, 31178, 31416, 33405, 34584, 36680, 39270, 40348, 43230, 44540, 46767, 48994, 50435, 52360, 53448, 55020, 57640, 60522, 62356, 66810, 73491, 77945, 78540, 80696, 86460, 89080, 93534, 97988, 100870, 110040, 121044, 122485, 124712, 133620, 146982, 151305, 155890, 157080, 171479, 172920, 187068, 195976, 201740, 233835, 242088, 244970, 267240, 293964, 302610, 311780, 342958, 367455, 374136, 403480, 467670, 489940, 514437, 587928, 605220, 623560, 685916, 734910, 857395, 935340, 979880, 1028874, 1210440, 1371832, 1469820, 1714790, 1870680, 2057748, 2572185, 2939640, 3429580, 4115496, 5144370, 6859160, 10288740, 20577480]

約数ペア:

[(1, 20577480), (2, 10288740), (3, 6859160), (4, 5144370), (5, 4115496), (6, 3429580), (7, 2939640), (8, 2572185), (10, 2057748), (11, 1870680), (12, 1714790), (14, 1469820), (15, 1371832), (17, 1210440), (20, 1028874), (21, 979880), (22, 935340), (24, 857395), (28, 734910), (30, 685916), (33, 623560), (34, 605220), (35, 587928), (40, 514437), (42, 489940), (44, 467670), (51, 403480), (55, 374136), (56, 367455), (60, 342958), (66, 311780), (68, 302610), (70, 293964), (77, 267240), (84, 244970), (85, 242088), (88, 233835), (102, 201740), (105, 195976), (110, 187068), (119, 172920), (120, 171479), (131, 157080), (132, 155890), (136, 151305), (140, 146982), (154, 133620), (165, 124712), (168, 122485), (170, 121044), (187, 110040), (204, 100870), (210, 97988), (220, 93534), (231, 89080), (238, 86460), (255, 80696), (262, 78540), (264, 77945), (280, 73491), (308, 66810), (330, 62356), (340, 60522), (357, 57640), (374, 55020), (385, 53448), (393, 52360), (408, 50435), (420, 48994), (440, 46767), (462, 44540), (476, 43230), (510, 40348), (524, 39270), (561, 36680), (595, 34584), (616, 33405), (655, 31416), (660, 31178), (680, 30261), (714, 28820), (748, 27510), (770, 26724), (786, 26180), (840, 24497), (917, 22440), (924, 22270), (935, 22008), (952, 21615), (1020, 20174), (1048, 19635), (1122, 18340), (1155, 17816), (1190, 17292), (1309, 15720), (1310, 15708), (1320, 15589), (1428, 14410), (1441, 14280), (1496, 13755), (1540, 13362), (1572, 13090), (1785, 11528), (1834, 11220), (1848, 11135), (1870, 11004), (1965, 10472), (2040, 10087), (2227, 9240), (2244, 9170), (2310, 8908), (2380, 8646), (2618, 7860), (2620, 7854), (2751, 7480), (2805, 7336), (2856, 7205), (2882, 7140), (3080, 6681), (3144, 6545), (3570, 5764), (3668, 5610), (3740, 5502), (3927, 5240), (3930, 5236), (4323, 4760), (4454, 4620), (4488, 4585)]