154923140

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{19913}}^1$

素因数の和:20311

約数の個数: 24

約数和(自身を含む): 326191320

約数和(自身を除く): 171268180

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 19913, 39826, 79652, 99565, 199130, 398260, 7746157, 15492314, 30984628, 38730785, 77461570, 154923140]

約数ペア:

[(1, 154923140), (2, 77461570), (4, 38730785), (5, 30984628), (10, 15492314), (20, 7746157), (389, 398260), (778, 199130), (1556, 99565), (1945, 79652), (3890, 39826), (7780, 19913)]