81369800

素因数分解:

$2^3\times 5^2\times {\mathrm{419}}^1\times {\mathrm{971}}^1$

素因数の和:1406

約数の個数: 48

約数和(自身を含む): 189831600

約数和(自身を除く): 108461800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 419, 838, 971, 1676, 1942, 2095, 3352, 3884, 4190, 4855, 7768, 8380, 9710, 10475, 16760, 19420, 20950, 24275, 38840, 41900, 48550, 83800, 97100, 194200, 406849, 813698, 1627396, 2034245, 3254792, 4068490, 8136980, 10171225, 16273960, 20342450, 40684900, 81369800]

約数ペア:

[(1, 81369800), (2, 40684900), (4, 20342450), (5, 16273960), (8, 10171225), (10, 8136980), (20, 4068490), (25, 3254792), (40, 2034245), (50, 1627396), (100, 813698), (200, 406849), (419, 194200), (838, 97100), (971, 83800), (1676, 48550), (1942, 41900), (2095, 38840), (3352, 24275), (3884, 20950), (4190, 19420), (4855, 16760), (7768, 10475), (8380, 9710)]