21888815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1409}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 28425600

約数和(自身を除く): 6536785

約数列:

[1, 5, 13, 65, 239, 1195, 1409, 3107, 7045, 15535, 18317, 91585, 336751, 1683755, 4377763, 21888815]

約数ペア:

[(1, 21888815), (5, 4377763), (13, 1683755), (65, 336751), (239, 91585), (1195, 18317), (1409, 15535), (3107, 7045)]