21002605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5297}}^1$

素因数の和:5376

約数の個数: 16

約数和(自身を含む): 27591984

約数和(自身を除く): 6589379

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5297, 26485, 68861, 323117, 344305, 1615585, 4200521, 21002605]

約数ペア:

[(1, 21002605), (5, 4200521), (13, 1615585), (61, 344305), (65, 323117), (305, 68861), (793, 26485), (3965, 5297)]