81738940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131837}}^1$

素因数の和:131877

約数の個数: 24

約数和(自身を含む): 177190272

約数和(自身を除く): 95451332

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131837, 263674, 527348, 659185, 1318370, 2636740, 4086947, 8173894, 16347788, 20434735, 40869470, 81738940]

約数ペア:

[(1, 81738940), (2, 40869470), (4, 20434735), (5, 16347788), (10, 8173894), (20, 4086947), (31, 2636740), (62, 1318370), (124, 659185), (155, 527348), (310, 263674), (620, 131837)]