4005080

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{449}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 9072000

約数和(自身を除く): 5066920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 449, 892, 898, 1115, 1784, 1796, 2230, 2245, 3592, 4460, 4490, 8920, 8980, 17960, 100127, 200254, 400508, 500635, 801016, 1001270, 2002540, 4005080]

約数ペア:

[(1, 4005080), (2, 2002540), (4, 1001270), (5, 801016), (8, 500635), (10, 400508), (20, 200254), (40, 100127), (223, 17960), (446, 8980), (449, 8920), (892, 4490), (898, 4460), (1115, 3592), (1784, 2245), (1796, 2230)]