20521020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26309}}^1$

素因数の和:26334

約数の個数: 48

約数和(自身を含む): 61881120

約数和(自身を除く): 41360100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26309, 52618, 78927, 105236, 131545, 157854, 263090, 315708, 342017, 394635, 526180, 684034, 789270, 1026051, 1368068, 1578540, 1710085, 2052102, 3420170, 4104204, 5130255, 6840340, 10260510, 20521020]

約数ペア:

[(1, 20521020), (2, 10260510), (3, 6840340), (4, 5130255), (5, 4104204), (6, 3420170), (10, 2052102), (12, 1710085), (13, 1578540), (15, 1368068), (20, 1026051), (26, 789270), (30, 684034), (39, 526180), (52, 394635), (60, 342017), (65, 315708), (78, 263090), (130, 157854), (156, 131545), (195, 105236), (260, 78927), (390, 52618), (780, 26309)]