7827921

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{401}}^1$

素因数の和:654

約数の個数: 20

約数和(自身を含む): 11771364

約数和(自身を除く): 3943443

約数列:

[1, 3, 9, 27, 81, 241, 401, 723, 1203, 2169, 3609, 6507, 10827, 19521, 32481, 96641, 289923, 869769, 2609307, 7827921]

約数ペア:

[(1, 7827921), (3, 2609307), (9, 869769), (27, 289923), (81, 96641), (241, 32481), (401, 19521), (723, 10827), (1203, 6507), (2169, 3609)]