21889655

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{313}}^1$

素因数の和:586

約数の個数: 16

約数和(自身を含む): 26858304

約数和(自身を除く): 4968649

約数列:

[1, 5, 71, 197, 313, 355, 985, 1565, 13987, 22223, 61661, 69935, 111115, 308305, 4377931, 21889655]

約数ペア:

[(1, 21889655), (5, 4377931), (71, 308305), (197, 111115), (313, 69935), (355, 61661), (985, 22223), (1565, 13987)]