18655287

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 11149257

約数列:

[1, 3, 7, 21, 41, 47, 123, 141, 287, 329, 461, 861, 987, 1383, 1927, 3227, 5781, 9681, 13489, 18901, 21667, 40467, 56703, 65001, 132307, 151669, 396921, 455007, 888347, 2665041, 6218429, 18655287]

約数ペア:

[(1, 18655287), (3, 6218429), (7, 2665041), (21, 888347), (41, 455007), (47, 396921), (123, 151669), (141, 132307), (287, 65001), (329, 56703), (461, 40467), (861, 21667), (987, 18901), (1383, 13489), (1927, 9681), (3227, 5781)]