81615075

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{25307}}^1$

素因数の和:25363

約数の個数: 24

約数和(自身を含む): 138080448

約数和(自身を除く): 56465373

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 25307, 75921, 126535, 379605, 632675, 1088201, 1898025, 3264603, 5441005, 16323015, 27205025, 81615075]

約数ペア:

[(1, 81615075), (3, 27205025), (5, 16323015), (15, 5441005), (25, 3264603), (43, 1898025), (75, 1088201), (129, 632675), (215, 379605), (645, 126535), (1075, 75921), (3225, 25307)]