19897175

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 25665024

約数和(自身を除く): 5767849

約数列:

[1, 5, 25, 43, 83, 215, 223, 415, 1075, 1115, 2075, 3569, 5575, 9589, 17845, 18509, 47945, 89225, 92545, 239725, 462725, 795887, 3979435, 19897175]

約数ペア:

[(1, 19897175), (5, 3979435), (25, 795887), (43, 462725), (83, 239725), (215, 92545), (223, 89225), (415, 47945), (1075, 18509), (1115, 17845), (2075, 9589), (3569, 5575)]