312308980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{143261}}^1$

素因数の和:143379

約数の個数: 24

約数和(自身を含む): 661870440

約数和(自身を除く): 349561460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 143261, 286522, 573044, 716305, 1432610, 2865220, 15615449, 31230898, 62461796, 78077245, 156154490, 312308980]

約数ペア:

[(1, 312308980), (2, 156154490), (4, 78077245), (5, 62461796), (10, 31230898), (20, 15615449), (109, 2865220), (218, 1432610), (436, 716305), (545, 573044), (1090, 286522), (2180, 143261)]