8641900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1074

約数の個数: 36

約数和(自身を含む): 18983160

約数和(自身を除く): 10341260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 971, 1780, 1942, 2225, 3884, 4450, 4855, 8900, 9710, 19420, 24275, 48550, 86419, 97100, 172838, 345676, 432095, 864190, 1728380, 2160475, 4320950, 8641900]

約数ペア:

[(1, 8641900), (2, 4320950), (4, 2160475), (5, 1728380), (10, 864190), (20, 432095), (25, 345676), (50, 172838), (89, 97100), (100, 86419), (178, 48550), (356, 24275), (445, 19420), (890, 9710), (971, 8900), (1780, 4855), (1942, 4450), (2225, 3884)]