20351240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5591}}^1$

素因数の和:5622

約数の個数: 64

約数和(自身を含む): 56367360

約数和(自身を除く): 36016120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5591, 11182, 22364, 27955, 39137, 44728, 55910, 72683, 78274, 111820, 145366, 156548, 195685, 223640, 290732, 313096, 363415, 391370, 508781, 581464, 726830, 782740, 1017562, 1453660, 1565480, 2035124, 2543905, 2907320, 4070248, 5087810, 10175620, 20351240]

約数ペア:

[(1, 20351240), (2, 10175620), (4, 5087810), (5, 4070248), (7, 2907320), (8, 2543905), (10, 2035124), (13, 1565480), (14, 1453660), (20, 1017562), (26, 782740), (28, 726830), (35, 581464), (40, 508781), (52, 391370), (56, 363415), (65, 313096), (70, 290732), (91, 223640), (104, 195685), (130, 156548), (140, 145366), (182, 111820), (260, 78274), (280, 72683), (364, 55910), (455, 44728), (520, 39137), (728, 27955), (910, 22364), (1820, 11182), (3640, 5591)]