21271870

素因数分解:

$2^1\times 5^1\times {\mathrm{503}}^1\times {\mathrm{4229}}^1$

素因数の和:4739

約数の個数: 16

約数和(自身を含む): 38374560

約数和(自身を除く): 17102690

約数列:

[1, 2, 5, 10, 503, 1006, 2515, 4229, 5030, 8458, 21145, 42290, 2127187, 4254374, 10635935, 21271870]

約数ペア:

[(1, 21271870), (2, 10635935), (5, 4254374), (10, 2127187), (503, 42290), (1006, 21145), (2515, 8458), (4229, 5030)]