68898980

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{19913}}^1$

素因数の和:20095

約数の個数: 24

約数和(自身を含む): 145531512

約数和(自身を除く): 76632532

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 19913, 39826, 79652, 99565, 199130, 398260, 3444949, 6889898, 13779796, 17224745, 34449490, 68898980]

約数ペア:

[(1, 68898980), (2, 34449490), (4, 17224745), (5, 13779796), (10, 6889898), (20, 3444949), (173, 398260), (346, 199130), (692, 99565), (865, 79652), (1730, 39826), (3460, 19913)]