20939615

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{971}}^1$

素因数の和:1222

約数の個数: 16

約数和(自身を含む): 26593920

約数和(自身を除く): 5654305

約数列:

[1, 5, 19, 95, 227, 971, 1135, 4313, 4855, 18449, 21565, 92245, 220417, 1102085, 4187923, 20939615]

約数ペア:

[(1, 20939615), (5, 4187923), (19, 1102085), (95, 220417), (227, 92245), (971, 21565), (1135, 18449), (4313, 4855)]