19753985

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 24467520

約数和(自身を除く): 4713535

約数列:

[1, 5, 43, 139, 215, 661, 695, 3305, 5977, 28423, 29885, 91879, 142115, 459395, 3950797, 19753985]

約数ペア:

[(1, 19753985), (5, 3950797), (43, 459395), (139, 142115), (215, 91879), (661, 29885), (695, 28423), (3305, 5977)]