80137780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97729}}^1$

素因数の和:97779

約数の個数: 24

約数和(自身を含む): 172395720

約数和(自身を除く): 92257940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 97729, 195458, 390916, 488645, 977290, 1954580, 4006889, 8013778, 16027556, 20034445, 40068890, 80137780]

約数ペア:

[(1, 80137780), (2, 40068890), (4, 20034445), (5, 16027556), (10, 8013778), (20, 4006889), (41, 1954580), (82, 977290), (164, 488645), (205, 390916), (410, 195458), (820, 97729)]