81940125

素因数分解:

$3^1\times 5^3\times {\mathrm{353}}^1\times {\mathrm{619}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 136955520

約数和(自身を除く): 55015395

約数列:

[1, 3, 5, 15, 25, 75, 125, 353, 375, 619, 1059, 1765, 1857, 3095, 5295, 8825, 9285, 15475, 26475, 44125, 46425, 77375, 132375, 218507, 232125, 655521, 1092535, 3277605, 5462675, 16388025, 27313375, 81940125]

約数ペア:

[(1, 81940125), (3, 27313375), (5, 16388025), (15, 5462675), (25, 3277605), (75, 1092535), (125, 655521), (353, 232125), (375, 218507), (619, 132375), (1059, 77375), (1765, 46425), (1857, 44125), (3095, 26475), (5295, 15475), (8825, 9285)]