20762885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 8993275

約数列:

[1, 5, 11, 13, 55, 65, 71, 143, 355, 409, 715, 781, 923, 2045, 3905, 4499, 4615, 5317, 10153, 22495, 26585, 29039, 50765, 58487, 145195, 292435, 319429, 377507, 1597145, 1887535, 4152577, 20762885]

約数ペア:

[(1, 20762885), (5, 4152577), (11, 1887535), (13, 1597145), (55, 377507), (65, 319429), (71, 292435), (143, 145195), (355, 58487), (409, 50765), (715, 29039), (781, 26585), (923, 22495), (2045, 10153), (3905, 5317), (4499, 4615)]