31081895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 10830745

約数列:

[1, 5, 13, 41, 65, 107, 109, 205, 533, 535, 545, 1391, 1417, 2665, 4387, 4469, 6955, 7085, 11663, 21935, 22345, 57031, 58097, 58315, 151619, 285155, 290485, 478183, 758095, 2390915, 6216379, 31081895]

約数ペア:

[(1, 31081895), (5, 6216379), (13, 2390915), (41, 758095), (65, 478183), (107, 290485), (109, 285155), (205, 151619), (533, 58315), (535, 58097), (545, 57031), (1391, 22345), (1417, 21935), (2665, 11663), (4387, 7085), (4469, 6955)]