18775240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{601}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 46811520

約数和(自身を除く): 28036280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 601, 710, 781, 1202, 1420, 1562, 2404, 2840, 3005, 3124, 3905, 4808, 6010, 6248, 6611, 7810, 12020, 13222, 15620, 24040, 26444, 31240, 33055, 42671, 52888, 66110, 85342, 132220, 170684, 213355, 264440, 341368, 426710, 469381, 853420, 938762, 1706840, 1877524, 2346905, 3755048, 4693810, 9387620, 18775240]

約数ペア:

[(1, 18775240), (2, 9387620), (4, 4693810), (5, 3755048), (8, 2346905), (10, 1877524), (11, 1706840), (20, 938762), (22, 853420), (40, 469381), (44, 426710), (55, 341368), (71, 264440), (88, 213355), (110, 170684), (142, 132220), (220, 85342), (284, 66110), (355, 52888), (440, 42671), (568, 33055), (601, 31240), (710, 26444), (781, 24040), (1202, 15620), (1420, 13222), (1562, 12020), (2404, 7810), (2840, 6611), (3005, 6248), (3124, 6010), (3905, 4808)]