64142025

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{19889}}^1$

素因数の和:19945

約数の個数: 24

約数和(自身を含む): 108519840

約数和(自身を除く): 44377815

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 19889, 59667, 99445, 298335, 497225, 855227, 1491675, 2565681, 4276135, 12828405, 21380675, 64142025]

約数ペア:

[(1, 64142025), (3, 21380675), (5, 12828405), (15, 4276135), (25, 2565681), (43, 1491675), (75, 855227), (129, 497225), (215, 298335), (645, 99445), (1075, 59667), (3225, 19889)]