18040175

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 23436000

約数和(自身を除く): 5395825

約数列:

[1, 5, 25, 29, 145, 149, 167, 725, 745, 835, 3725, 4175, 4321, 4843, 21605, 24215, 24883, 108025, 121075, 124415, 622075, 721607, 3608035, 18040175]

約数ペア:

[(1, 18040175), (5, 3608035), (25, 721607), (29, 622075), (145, 124415), (149, 121075), (167, 108025), (725, 24883), (745, 24215), (835, 21605), (3725, 4843), (4175, 4321)]