21446725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 28267040

約数和(自身を除く): 6820315

約数列:

[1, 5, 19, 25, 95, 163, 277, 475, 815, 1385, 3097, 4075, 5263, 6925, 15485, 26315, 45151, 77425, 131575, 225755, 857869, 1128775, 4289345, 21446725]

約数ペア:

[(1, 21446725), (5, 4289345), (19, 1128775), (25, 857869), (95, 225755), (163, 131575), (277, 77425), (475, 45151), (815, 26315), (1385, 15485), (3097, 6925), (4075, 5263)]