81691975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4583}}^1$

素因数の和:4647

約数の個数: 24

約数和(自身を含む): 109135872

約数和(自身を除く): 27443897

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 3565, 4583, 17825, 22915, 105409, 114575, 142073, 527045, 710365, 2635225, 3267679, 3551825, 16338395, 81691975]

約数ペア:

[(1, 81691975), (5, 16338395), (23, 3551825), (25, 3267679), (31, 2635225), (115, 710365), (155, 527045), (575, 142073), (713, 114575), (775, 105409), (3565, 22915), (4583, 17825)]