17724440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^2$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 40960080

約数和(自身を除く): 23235640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 79, 142, 158, 284, 316, 355, 395, 568, 632, 710, 790, 1420, 1580, 2840, 3160, 5609, 6241, 11218, 12482, 22436, 24964, 28045, 31205, 44872, 49928, 56090, 62410, 112180, 124820, 224360, 249640, 443111, 886222, 1772444, 2215555, 3544888, 4431110, 8862220, 17724440]

約数ペア:

[(1, 17724440), (2, 8862220), (4, 4431110), (5, 3544888), (8, 2215555), (10, 1772444), (20, 886222), (40, 443111), (71, 249640), (79, 224360), (142, 124820), (158, 112180), (284, 62410), (316, 56090), (355, 49928), (395, 44872), (568, 31205), (632, 28045), (710, 24964), (790, 22436), (1420, 12482), (1580, 11218), (2840, 6241), (3160, 5609)]