65321680

素因数分解:

$2^4\times 5^1\times {\mathrm{816521}}^1$

素因数の和:816534

約数の個数: 20

約数和(自身を含む): 151873092

約数和(自身を除く): 86551412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 816521, 1633042, 3266084, 4082605, 6532168, 8165210, 13064336, 16330420, 32660840, 65321680]

約数ペア:

[(1, 65321680), (2, 32660840), (4, 16330420), (5, 13064336), (8, 8165210), (10, 6532168), (16, 4082605), (20, 3266084), (40, 1633042), (80, 816521)]