20005621

素因数分解:

${\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:396

約数の個数: 16

約数和(自身を含む): 21605760

約数和(自身を除く): 1600139

約数列:

[1, 29, 43, 61, 263, 1247, 1769, 2623, 7627, 11309, 16043, 76067, 327961, 465247, 689849, 20005621]

約数ペア:

[(1, 20005621), (29, 689849), (43, 465247), (61, 327961), (263, 76067), (1247, 16043), (1769, 11309), (2623, 7627)]