21503657

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1319}}^1$

素因数の和:1480

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 4727383

約数列:

[1, 7, 17, 119, 137, 959, 1319, 2329, 9233, 16303, 22423, 156961, 180703, 1264921, 3071951, 21503657]

約数ペア:

[(1, 21503657), (7, 3071951), (17, 1264921), (119, 180703), (137, 156961), (959, 22423), (1319, 16303), (2329, 9233)]