20000440

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4673}}^1$

素因数の和:4791

約数の個数: 32

約数和(自身を含む): 45431280

約数和(自身を除く): 25430840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4673, 9346, 18692, 23365, 37384, 46730, 93460, 186920, 500011, 1000022, 2000044, 2500055, 4000088, 5000110, 10000220, 20000440]

約数ペア:

[(1, 20000440), (2, 10000220), (4, 5000110), (5, 4000088), (8, 2500055), (10, 2000044), (20, 1000022), (40, 500011), (107, 186920), (214, 93460), (428, 46730), (535, 37384), (856, 23365), (1070, 18692), (2140, 9346), (4280, 4673)]