440840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 1010880

約数和(自身を除く): 570040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 107, 206, 214, 412, 428, 515, 535, 824, 856, 1030, 1070, 2060, 2140, 4120, 4280, 11021, 22042, 44084, 55105, 88168, 110210, 220420, 440840]

約数ペア:

[(1, 440840), (2, 220420), (4, 110210), (5, 88168), (8, 55105), (10, 44084), (20, 22042), (40, 11021), (103, 4280), (107, 4120), (206, 2140), (214, 2060), (412, 1070), (428, 1030), (515, 856), (535, 824)]