21000604840

素因数分解:

$2^3\times 5^1\times {\mathrm{2377}}^1\times {\mathrm{220873}}^1$

素因数の和:223261

約数の個数: 32

約数和(自身を含む): 47271453480

約数和(自身を除く): 26270848640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2377, 4754, 9508, 11885, 19016, 23770, 47540, 95080, 220873, 441746, 883492, 1104365, 1766984, 2208730, 4417460, 8834920, 525015121, 1050030242, 2100060484, 2625075605, 4200120968, 5250151210, 10500302420, 21000604840]

約数ペア:

[(1, 21000604840), (2, 10500302420), (4, 5250151210), (5, 4200120968), (8, 2625075605), (10, 2100060484), (20, 1050030242), (40, 525015121), (2377, 8834920), (4754, 4417460), (9508, 2208730), (11885, 1766984), (19016, 1104365), (23770, 883492), (47540, 441746), (95080, 220873)]