21076815

素因数分解:

$3^1\times 5^1\times {\mathrm{751}}^1\times {\mathrm{1871}}^1$

素因数の和:2630

約数の個数: 16

約数和(自身を含む): 33785856

約数和(自身を除く): 12709041

約数列:

[1, 3, 5, 15, 751, 1871, 2253, 3755, 5613, 9355, 11265, 28065, 1405121, 4215363, 7025605, 21076815]

約数ペア:

[(1, 21076815), (3, 7025605), (5, 4215363), (15, 1405121), (751, 28065), (1871, 11265), (2253, 9355), (3755, 5613)]