20516860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11273}}^1$

素因数の和:11302

約数の個数: 48

約数和(自身を含む): 53032896

約数和(自身を除く): 32516036

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11273, 22546, 45092, 56365, 78911, 112730, 146549, 157822, 225460, 293098, 315644, 394555, 586196, 732745, 789110, 1025843, 1465490, 1578220, 2051686, 2930980, 4103372, 5129215, 10258430, 20516860]

約数ペア:

[(1, 20516860), (2, 10258430), (4, 5129215), (5, 4103372), (7, 2930980), (10, 2051686), (13, 1578220), (14, 1465490), (20, 1025843), (26, 789110), (28, 732745), (35, 586196), (52, 394555), (65, 315644), (70, 293098), (91, 225460), (130, 157822), (140, 146549), (182, 112730), (260, 78911), (364, 56365), (455, 45092), (910, 22546), (1820, 11273)]