205915820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21767}}^1$

素因数の和:21830

約数の個数: 48

約数和(自身を含む): 482727168

約数和(自身を除く): 276811348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2365, 4730, 9460, 21767, 43534, 87068, 108835, 217670, 239437, 435340, 478874, 935981, 957748, 1197185, 1871962, 2394370, 3743924, 4679905, 4788740, 9359810, 10295791, 18719620, 20591582, 41183164, 51478955, 102957910, 205915820]

約数ペア:

[(1, 205915820), (2, 102957910), (4, 51478955), (5, 41183164), (10, 20591582), (11, 18719620), (20, 10295791), (22, 9359810), (43, 4788740), (44, 4679905), (55, 3743924), (86, 2394370), (110, 1871962), (172, 1197185), (215, 957748), (220, 935981), (430, 478874), (473, 435340), (860, 239437), (946, 217670), (1892, 108835), (2365, 87068), (4730, 43534), (9460, 21767)]