18213951

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 29491200

約数和(自身を除く): 11277249

約数列:

[1, 3, 7, 19, 21, 57, 133, 191, 239, 399, 573, 717, 1337, 1673, 3629, 4011, 4541, 5019, 10887, 13623, 25403, 31787, 45649, 76209, 95361, 136947, 319543, 867331, 958629, 2601993, 6071317, 18213951]

約数ペア:

[(1, 18213951), (3, 6071317), (7, 2601993), (19, 958629), (21, 867331), (57, 319543), (133, 136947), (191, 95361), (239, 76209), (399, 45649), (573, 31787), (717, 25403), (1337, 13623), (1673, 10887), (3629, 5019), (4011, 4541)]