20856275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 28458000

約数和(自身を除く): 7601725

約数列:

[1, 5, 11, 25, 55, 149, 275, 509, 745, 1639, 2545, 3725, 5599, 8195, 12725, 27995, 40975, 75841, 139975, 379205, 834251, 1896025, 4171255, 20856275]

約数ペア:

[(1, 20856275), (5, 4171255), (11, 1896025), (25, 834251), (55, 379205), (149, 139975), (275, 75841), (509, 40975), (745, 27995), (1639, 12725), (2545, 8195), (3725, 5599)]