21034805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20129}}^1$

素因数の和:20164

約数の個数: 16

約数和(自身を含む): 28987200

約数和(自身を除く): 7952395

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20129, 100645, 221419, 382451, 1107095, 1912255, 4206961, 21034805]

約数ペア:

[(1, 21034805), (5, 4206961), (11, 1912255), (19, 1107095), (55, 382451), (95, 221419), (209, 100645), (1045, 20129)]