31000155

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{409}}^1$

素因数の和:611

約数の個数: 32

約数和(自身を含む): 51640320

約数和(自身を除く): 20640165

約数列:

[1, 3, 5, 15, 31, 93, 155, 163, 409, 465, 489, 815, 1227, 2045, 2445, 5053, 6135, 12679, 15159, 25265, 38037, 63395, 66667, 75795, 190185, 200001, 333335, 1000005, 2066677, 6200031, 10333385, 31000155]

約数ペア:

[(1, 31000155), (3, 10333385), (5, 6200031), (15, 2066677), (31, 1000005), (93, 333335), (155, 200001), (163, 190185), (409, 75795), (465, 66667), (489, 63395), (815, 38037), (1227, 25265), (2045, 15159), (2445, 12679), (5053, 6135)]