640432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3079}}^1$

素因数の和:3100

約数の個数: 20

約数和(自身を含む): 1336720

約数和(自身を除く): 696288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3079, 6158, 12316, 24632, 40027, 49264, 80054, 160108, 320216, 640432]

約数ペア:

[(1, 640432), (2, 320216), (4, 160108), (8, 80054), (13, 49264), (16, 40027), (26, 24632), (52, 12316), (104, 6158), (208, 3079)]