21000739208

素因数分解:

$2^3\times {\mathrm{1409}}^1\times {\mathrm{1863089}}^1$

素因数の和:1864504

約数の個数: 16

約数和(自身を含む): 39404353500

約数和(自身を除く): 18403614292

約数列:

[1, 2, 4, 8, 1409, 2818, 5636, 11272, 1863089, 3726178, 7452356, 14904712, 2625092401, 5250184802, 10500369604, 21000739208]

約数ペア:

[(1, 21000739208), (2, 10500369604), (4, 5250184802), (8, 2625092401), (1409, 14904712), (2818, 7452356), (5636, 3726178), (11272, 1863089)]