81278827

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{1571}}^1$

素因数の和:1986

約数の個数: 16

約数和(自身を含む): 98092800

約数和(自身を除く): 16813973

約数列:

[1, 7, 19, 133, 389, 1571, 2723, 7391, 10997, 29849, 51737, 208943, 611119, 4277833, 11611261, 81278827]

約数ペア:

[(1, 81278827), (7, 11611261), (19, 4277833), (133, 611119), (389, 208943), (1571, 51737), (2723, 29849), (7391, 10997)]