21742725

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2213}}^1$

素因数の和:2357

約数の個数: 24

約数和(自身を含む): 36238752

約数和(自身を除く): 14496027

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2213, 3275, 6639, 9825, 11065, 33195, 55325, 165975, 289903, 869709, 1449515, 4348545, 7247575, 21742725]

約数ペア:

[(1, 21742725), (3, 7247575), (5, 4348545), (15, 1449515), (25, 869709), (75, 289903), (131, 165975), (393, 55325), (655, 33195), (1965, 11065), (2213, 9825), (3275, 6639)]