21226563

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 11720637

約数列:

[1, 3, 9, 27, 43, 47, 129, 141, 387, 389, 423, 1161, 1167, 1269, 2021, 3501, 6063, 10503, 16727, 18189, 18283, 50181, 54567, 54849, 150543, 164547, 451629, 493641, 786169, 2358507, 7075521, 21226563]

約数ペア:

[(1, 21226563), (3, 7075521), (9, 2358507), (27, 786169), (43, 493641), (47, 451629), (129, 164547), (141, 150543), (387, 54849), (389, 54567), (423, 50181), (1161, 18283), (1167, 18189), (1269, 16727), (2021, 10503), (3501, 6063)]