20157501

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1571}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 33804288

約数和(自身を除く): 13646787

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1571, 1833, 4277, 4713, 10997, 12831, 20423, 32991, 61269, 73837, 142961, 221511, 428883, 516859, 959881, 1550577, 2879643, 6719167, 20157501]

約数ペア:

[(1, 20157501), (3, 6719167), (7, 2879643), (13, 1550577), (21, 959881), (39, 516859), (47, 428883), (91, 221511), (141, 142961), (273, 73837), (329, 61269), (611, 32991), (987, 20423), (1571, 12831), (1833, 10997), (4277, 4713)]