20257533

素因数分解:

$3^4\times {\mathrm{449}}^1\times {\mathrm{557}}^1$

素因数の和:1018

約数の個数: 20

約数和(自身を含む): 30383100

約数和(自身を除く): 10125567

約数列:

[1, 3, 9, 27, 81, 449, 557, 1347, 1671, 4041, 5013, 12123, 15039, 36369, 45117, 250093, 750279, 2250837, 6752511, 20257533]

約数ペア:

[(1, 20257533), (3, 6752511), (9, 2250837), (27, 750279), (81, 250093), (449, 45117), (557, 36369), (1347, 15039), (1671, 12123), (4041, 5013)]