21702215

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 26692416

約数和(自身を除く): 4990201

約数列:

[1, 5, 71, 113, 355, 541, 565, 2705, 8023, 38411, 40115, 61133, 192055, 305665, 4340443, 21702215]

約数ペア:

[(1, 21702215), (5, 4340443), (71, 305665), (113, 192055), (355, 61133), (541, 40115), (565, 38411), (2705, 8023)]