397013020

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{71663}}^1$

素因数の和:71949

約数の個数: 24

約数和(自身を含む): 836748864

約数和(自身を除く): 439735844

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 5540, 71663, 143326, 286652, 358315, 716630, 1433260, 19850651, 39701302, 79402604, 99253255, 198506510, 397013020]

約数ペア:

[(1, 397013020), (2, 198506510), (4, 99253255), (5, 79402604), (10, 39701302), (20, 19850651), (277, 1433260), (554, 716630), (1108, 358315), (1385, 286652), (2770, 143326), (5540, 71663)]