21027021

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{727}}^1$

素因数の和:1072

約数の個数: 16

約数和(自身を含む): 29073408

約数和(自身を除く): 8046387

約数列:

[1, 3, 31, 93, 311, 727, 933, 2181, 9641, 22537, 28923, 67611, 226097, 678291, 7009007, 21027021]

約数ペア:

[(1, 21027021), (3, 7009007), (31, 678291), (93, 226097), (311, 67611), (727, 28923), (933, 22537), (2181, 9641)]