18455740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 40388544

約数和(自身を除く): 21932804

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 284, 317, 355, 410, 634, 710, 820, 1268, 1420, 1585, 2911, 3170, 5822, 6340, 11644, 12997, 14555, 22507, 25994, 29110, 45014, 51988, 58220, 64985, 90028, 112535, 129970, 225070, 259940, 450140, 922787, 1845574, 3691148, 4613935, 9227870, 18455740]

約数ペア:

[(1, 18455740), (2, 9227870), (4, 4613935), (5, 3691148), (10, 1845574), (20, 922787), (41, 450140), (71, 259940), (82, 225070), (142, 129970), (164, 112535), (205, 90028), (284, 64985), (317, 58220), (355, 51988), (410, 45014), (634, 29110), (710, 25994), (820, 22507), (1268, 14555), (1420, 12997), (1585, 11644), (2911, 6340), (3170, 5822)]