81380626

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1\times {\mathrm{1831}}^1$

素因数の和:2217

約数の個数: 16

約数和(自身を含む): 124253568

約数和(自身を除く): 42872942

約数列:

[1, 2, 71, 142, 313, 626, 1831, 3662, 22223, 44446, 130001, 260002, 573103, 1146206, 40690313, 81380626]

約数ペア:

[(1, 81380626), (2, 40690313), (71, 1146206), (142, 573103), (313, 260002), (626, 130001), (1831, 44446), (3662, 22223)]