31906305

素因数分解:

$3^4\times 5^1\times {\mathrm{78781}}^1$

素因数の和:78798

約数の個数: 20

約数和(自身を含む): 57195732

約数和(自身を除く): 25289427

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 78781, 236343, 393905, 709029, 1181715, 2127087, 3545145, 6381261, 10635435, 31906305]

約数ペア:

[(1, 31906305), (3, 10635435), (5, 6381261), (9, 3545145), (15, 2127087), (27, 1181715), (45, 709029), (81, 393905), (135, 236343), (405, 78781)]