1331721

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 20

約数和(自身を含む): 2042964

約数和(自身を除く): 711243

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 401, 1107, 1203, 3321, 3609, 10827, 16441, 32481, 49323, 147969, 443907, 1331721]

約数ペア:

[(1, 1331721), (3, 443907), (9, 147969), (27, 49323), (41, 32481), (81, 16441), (123, 10827), (369, 3609), (401, 3321), (1107, 1203)]