18390771

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6211}}^1$

素因数の和:6271

約数の個数: 24

約数和(自身を含む): 31010304

約数和(自身を除く): 12619533

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6211, 18633, 43477, 55899, 130431, 291917, 391293, 875751, 2043419, 2627253, 6130257, 18390771]

約数ペア:

[(1, 18390771), (3, 6130257), (7, 2627253), (9, 2043419), (21, 875751), (47, 391293), (63, 291917), (141, 130431), (329, 55899), (423, 43477), (987, 18633), (2961, 6211)]