858808420

素因数分解:

$2^2\times 5^1\times {\mathrm{1601}}^1\times {\mathrm{26821}}^1$

素因数の和:28431

約数の個数: 24

約数和(自身を含む): 1804691448

約数和(自身を除く): 945883028

約数列:

[1, 2, 4, 5, 10, 20, 1601, 3202, 6404, 8005, 16010, 26821, 32020, 53642, 107284, 134105, 268210, 536420, 42940421, 85880842, 171761684, 214702105, 429404210, 858808420]

約数ペア:

[(1, 858808420), (2, 429404210), (4, 214702105), (5, 171761684), (10, 85880842), (20, 42940421), (1601, 536420), (3202, 268210), (6404, 134105), (8005, 107284), (16010, 53642), (26821, 32020)]