1640694640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1577591}}^1$

素因数の和:1577617

約数の個数: 40

約数和(自身を含む): 4108049568

約数和(自身を除く): 2467354928

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1577591, 3155182, 6310364, 7887955, 12620728, 15775910, 20508683, 25241456, 31551820, 41017366, 63103640, 82034732, 102543415, 126207280, 164069464, 205086830, 328138928, 410173660, 820347320, 1640694640]

約数ペア:

[(1, 1640694640), (2, 820347320), (4, 410173660), (5, 328138928), (8, 205086830), (10, 164069464), (13, 126207280), (16, 102543415), (20, 82034732), (26, 63103640), (40, 41017366), (52, 31551820), (65, 25241456), (80, 20508683), (104, 15775910), (130, 12620728), (208, 7887955), (260, 6310364), (520, 3155182), (1040, 1577591)]