21000901288

素因数分解:

$2^3\times {\mathrm{659}}^1\times {\mathrm{3983479}}^1$

素因数の和:3984144

約数の個数: 16

約数和(自身を含む): 39436452000

約数和(自身を除く): 18435550712

約数列:

[1, 2, 4, 8, 659, 1318, 2636, 5272, 3983479, 7966958, 15933916, 31867832, 2625112661, 5250225322, 10500450644, 21000901288]

約数ペア:

[(1, 21000901288), (2, 10500450644), (4, 5250225322), (8, 2625112661), (659, 31867832), (1318, 15933916), (2636, 7966958), (5272, 3983479)]