20464702960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{531827}}^1$

素因数の和:531890

約数の個数: 80

約数和(自身を含む): 52625444256

約数和(自身を除く): 32160741296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 592, 740, 962, 1040, 1480, 1924, 2405, 2960, 3848, 4810, 7696, 9620, 19240, 38480, 531827, 1063654, 2127308, 2659135, 4254616, 5318270, 6913751, 8509232, 10636540, 13827502, 19677599, 21273080, 27655004, 34568755, 39355198, 42546160, 55310008, 69137510, 78710396, 98387995, 110620016, 138275020, 157420792, 196775990, 255808787, 276550040, 314841584, 393551980, 511617574, 553100080, 787103960, 1023235148, 1279043935, 1574207920, 2046470296, 2558087870, 4092940592, 5116175740, 10232351480, 20464702960]

約数ペア:

[(1, 20464702960), (2, 10232351480), (4, 5116175740), (5, 4092940592), (8, 2558087870), (10, 2046470296), (13, 1574207920), (16, 1279043935), (20, 1023235148), (26, 787103960), (37, 553100080), (40, 511617574), (52, 393551980), (65, 314841584), (74, 276550040), (80, 255808787), (104, 196775990), (130, 157420792), (148, 138275020), (185, 110620016), (208, 98387995), (260, 78710396), (296, 69137510), (370, 55310008), (481, 42546160), (520, 39355198), (592, 34568755), (740, 27655004), (962, 21273080), (1040, 19677599), (1480, 13827502), (1924, 10636540), (2405, 8509232), (2960, 6913751), (3848, 5318270), (4810, 4254616), (7696, 2659135), (9620, 2127308), (19240, 1063654), (38480, 531827)]