390403.0000000

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:600

約数の個数: 32

約数和(自身を含む): 16964640

約数和(自身を除く): 7990970

約数列:

[1, 2, 5, 10, 41, 43, 82, 86, 205, 215, 410, 430, 509, 1018, 1763, 2545, 3526, 5090, 8815, 17630, 20869, 21887, 41738, 43774, 104345, 109435, 208690, 218870, 897367, 1794734, 4486835, 8973670]

約数ペア:

[(1, 8973670), (2, 4486835), (5, 1794734), (10, 897367), (41, 218870), (43, 208690), (82, 109435), (86, 104345), (205, 43774), (215, 41738), (410, 21887), (430, 20869), (509, 17630), (1018, 8815), (1763, 5090), (2545, 3526)]