21324215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3557}}^1$

素因数の和:3682

約数の個数: 16

約数和(自身を含む): 28179360

約数和(自身を除く): 6855145

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3557, 5995, 17785, 39127, 195635, 387713, 1938565, 4264843, 21324215]

約数ペア:

[(1, 21324215), (5, 4264843), (11, 1938565), (55, 387713), (109, 195635), (545, 39127), (1199, 17785), (3557, 5995)]