1388405080

素因数分解:

$2^3\times 5^1\times {\mathrm{4217}}^1\times {\mathrm{8231}}^1$

素因数の和:12459

約数の個数: 32

約数和(自身を含む): 3125031840

約数和(自身を除く): 1736626760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4217, 8231, 8434, 16462, 16868, 21085, 32924, 33736, 41155, 42170, 65848, 82310, 84340, 164620, 168680, 329240, 34710127, 69420254, 138840508, 173550635, 277681016, 347101270, 694202540, 1388405080]

約数ペア:

[(1, 1388405080), (2, 694202540), (4, 347101270), (5, 277681016), (8, 173550635), (10, 138840508), (20, 69420254), (40, 34710127), (4217, 329240), (8231, 168680), (8434, 164620), (16462, 84340), (16868, 82310), (21085, 65848), (32924, 42170), (33736, 41155)]