85691420

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{9941}}^1$

素因数の和:10381

約数の個数: 24

約数和(自身を含む): 180387648

約数和(自身を除く): 94696228

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8620, 9941, 19882, 39764, 49705, 99410, 198820, 4284571, 8569142, 17138284, 21422855, 42845710, 85691420]

約数ペア:

[(1, 85691420), (2, 42845710), (4, 21422855), (5, 17138284), (10, 8569142), (20, 4284571), (431, 198820), (862, 99410), (1724, 49705), (2155, 39764), (4310, 19882), (8620, 9941)]