21427763

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2207}}^1$

素因数の和:2306

約数の個数: 16

約数和(自身を含む): 26142720

約数和(自身を除く): 4714957

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2207, 9709, 15449, 41933, 161111, 293531, 1127777, 3061109, 21427763]

約数ペア:

[(1, 21427763), (7, 3061109), (19, 1127777), (73, 293531), (133, 161111), (511, 41933), (1387, 15449), (2207, 9709)]