21930415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5531}}^1$

素因数の和:5610

約数の個数: 16

約数和(自身を含む): 28810656

約数和(自身を除く): 6880241

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5531, 27655, 71903, 337391, 359515, 1686955, 4386083, 21930415]

約数ペア:

[(1, 21930415), (5, 4386083), (13, 1686955), (61, 359515), (65, 337391), (305, 71903), (793, 27655), (3965, 5531)]