89991080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{31687}}^1$

素因数の和:31769

約数の個数: 32

約数和(自身を含む): 205338240

約数和(自身を除く): 115347160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 31687, 63374, 126748, 158435, 253496, 316870, 633740, 1267480, 2249777, 4499554, 8999108, 11248885, 17998216, 22497770, 44995540, 89991080]

約数ペア:

[(1, 89991080), (2, 44995540), (4, 22497770), (5, 17998216), (8, 11248885), (10, 8999108), (20, 4499554), (40, 2249777), (71, 1267480), (142, 633740), (284, 316870), (355, 253496), (568, 158435), (710, 126748), (1420, 63374), (2840, 31687)]