21290259

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1\times {\mathrm{457}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 29084832

約数和(自身を除く): 7794573

約数列:

[1, 3, 53, 159, 293, 457, 879, 1371, 15529, 24221, 46587, 72663, 133901, 401703, 7096753, 21290259]

約数ペア:

[(1, 21290259), (3, 7096753), (53, 401703), (159, 133901), (293, 72663), (457, 46587), (879, 24221), (1371, 15529)]