18473931

素因数分解:

$3^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:440

約数の個数: 36

約数和(自身を含む): 31353192

約数和(自身を除く): 12879261

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 163, 257, 441, 489, 771, 1141, 1467, 1799, 2313, 3423, 5397, 7987, 10269, 12593, 16191, 23961, 37779, 41891, 71883, 113337, 125673, 293237, 377019, 879711, 2052659, 2639133, 6157977, 18473931]

約数ペア:

[(1, 18473931), (3, 6157977), (7, 2639133), (9, 2052659), (21, 879711), (49, 377019), (63, 293237), (147, 125673), (163, 113337), (257, 71883), (441, 41891), (489, 37779), (771, 23961), (1141, 16191), (1467, 12593), (1799, 10269), (2313, 7987), (3423, 5397)]