27987999

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{1999}}^1$

素因数の和:2374

約数の個数: 16

約数和(自身を含む): 40320000

約数和(自身を除く): 12332001

約数列:

[1, 3, 13, 39, 359, 1077, 1999, 4667, 5997, 14001, 25987, 77961, 717641, 2152923, 9329333, 27987999]

約数ペア:

[(1, 27987999), (3, 9329333), (13, 2152923), (39, 717641), (359, 77961), (1077, 25987), (1999, 14001), (4667, 5997)]