913687640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{321721}}^1$

素因数の和:321803

約数の個数: 32

約数和(自身を含む): 2084758560

約数和(自身を除く): 1171070920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 321721, 643442, 1286884, 1608605, 2573768, 3217210, 6434420, 12868840, 22842191, 45684382, 91368764, 114210955, 182737528, 228421910, 456843820, 913687640]

約数ペア:

[(1, 913687640), (2, 456843820), (4, 228421910), (5, 182737528), (8, 114210955), (10, 91368764), (20, 45684382), (40, 22842191), (71, 12868840), (142, 6434420), (284, 3217210), (355, 2573768), (568, 1608605), (710, 1286884), (1420, 643442), (2840, 321721)]