18823640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 27832360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 239, 358, 440, 478, 716, 895, 956, 1195, 1432, 1790, 1912, 1969, 2390, 2629, 3580, 3938, 4780, 5258, 7160, 7876, 9560, 9845, 10516, 13145, 15752, 19690, 21032, 26290, 39380, 42781, 52580, 78760, 85562, 105160, 171124, 213905, 342248, 427810, 470591, 855620, 941182, 1711240, 1882364, 2352955, 3764728, 4705910, 9411820, 18823640]

約数ペア:

[(1, 18823640), (2, 9411820), (4, 4705910), (5, 3764728), (8, 2352955), (10, 1882364), (11, 1711240), (20, 941182), (22, 855620), (40, 470591), (44, 427810), (55, 342248), (88, 213905), (110, 171124), (179, 105160), (220, 85562), (239, 78760), (358, 52580), (440, 42781), (478, 39380), (716, 26290), (895, 21032), (956, 19690), (1195, 15752), (1432, 13145), (1790, 10516), (1912, 9845), (1969, 9560), (2390, 7876), (2629, 7160), (3580, 5258), (3938, 4780)]