21320885

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{467}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 26822016

約数和(自身を除く): 5501131

約数列:

[1, 5, 23, 115, 397, 467, 1985, 2335, 9131, 10741, 45655, 53705, 185399, 926995, 4264177, 21320885]

約数ペア:

[(1, 21320885), (5, 4264177), (23, 926995), (115, 185399), (397, 53705), (467, 45655), (1985, 10741), (2335, 9131)]