21179425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 6318815

約数列:

[1, 5, 25, 29, 131, 145, 223, 655, 725, 1115, 3275, 3799, 5575, 6467, 18995, 29213, 32335, 94975, 146065, 161675, 730325, 847177, 4235885, 21179425]

約数ペア:

[(1, 21179425), (5, 4235885), (25, 847177), (29, 730325), (131, 161675), (145, 146065), (223, 94975), (655, 32335), (725, 29213), (1115, 18995), (3275, 6467), (3799, 5575)]