8734640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2663}}^1$

素因数の和:2717

約数の個数: 40

約数和(自身を含む): 20811168

約数和(自身を除く): 12076528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 2663, 3280, 5326, 10652, 13315, 21304, 26630, 42608, 53260, 106520, 109183, 213040, 218366, 436732, 545915, 873464, 1091830, 1746928, 2183660, 4367320, 8734640]

約数ペア:

[(1, 8734640), (2, 4367320), (4, 2183660), (5, 1746928), (8, 1091830), (10, 873464), (16, 545915), (20, 436732), (40, 218366), (41, 213040), (80, 109183), (82, 106520), (164, 53260), (205, 42608), (328, 26630), (410, 21304), (656, 13315), (820, 10652), (1640, 5326), (2663, 3280)]