689799080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{242887}}^1$

素因数の和:242969

約数の個数: 32

約数和(自身を含む): 1573914240

約数和(自身を除く): 884115160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 242887, 485774, 971548, 1214435, 1943096, 2428870, 4857740, 9715480, 17244977, 34489954, 68979908, 86224885, 137959816, 172449770, 344899540, 689799080]

約数ペア:

[(1, 689799080), (2, 344899540), (4, 172449770), (5, 137959816), (8, 86224885), (10, 68979908), (20, 34489954), (40, 17244977), (71, 9715480), (142, 4857740), (284, 2428870), (355, 1943096), (568, 1214435), (710, 971548), (1420, 485774), (2840, 242887)]