405018520

素因数分解:

$2^3\times 5^1\times {\mathrm{2083}}^1\times {\mathrm{4861}}^1$

素因数の和:6955

約数の個数: 32

約数和(自身を含む): 911916720

約数和(自身を除く): 506898200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2083, 4166, 4861, 8332, 9722, 10415, 16664, 19444, 20830, 24305, 38888, 41660, 48610, 83320, 97220, 194440, 10125463, 20250926, 40501852, 50627315, 81003704, 101254630, 202509260, 405018520]

約数ペア:

[(1, 405018520), (2, 202509260), (4, 101254630), (5, 81003704), (8, 50627315), (10, 40501852), (20, 20250926), (40, 10125463), (2083, 194440), (4166, 97220), (4861, 83320), (8332, 48610), (9722, 41660), (10415, 38888), (16664, 24305), (19444, 20830)]