668889171

素因数分解:

$3^4\times {\mathrm{193}}^1\times {\mathrm{42787}}^1$

素因数の和:42992

約数の個数: 20

約数和(自身を含む): 1004405512

約数和(自身を除く): 335516341

約数列:

[1, 3, 9, 27, 81, 193, 579, 1737, 5211, 15633, 42787, 128361, 385083, 1155249, 3465747, 8257891, 24773673, 74321019, 222963057, 668889171]

約数ペア:

[(1, 668889171), (3, 222963057), (9, 74321019), (27, 24773673), (81, 8257891), (193, 3465747), (579, 1155249), (1737, 385083), (5211, 128361), (15633, 42787)]