21640787

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{859}}^1$

素因数の和:986

約数の個数: 16

約数和(自身を含む): 25593600

約数和(自身を除く): 3952813

約数列:

[1, 7, 59, 61, 413, 427, 859, 3599, 6013, 25193, 50681, 52399, 354767, 366793, 3091541, 21640787]

約数ペア:

[(1, 21640787), (7, 3091541), (59, 366793), (61, 354767), (413, 52399), (427, 50681), (859, 25193), (3599, 6013)]