21690723

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{1579}}^1$

素因数の和:1842

約数の個数: 16

約数和(自身を含む): 30588800

約数和(自身を除く): 8898077

約数列:

[1, 3, 19, 57, 241, 723, 1579, 4579, 4737, 13737, 30001, 90003, 380539, 1141617, 7230241, 21690723]

約数ペア:

[(1, 21690723), (3, 7230241), (19, 1141617), (57, 380539), (241, 90003), (723, 30001), (1579, 13737), (4579, 4737)]