208272020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{2137}}^1$

素因数の和:2600

約数の個数: 48

約数和(自身を含む): 478433088

約数和(自身を除く): 270161068

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 443, 886, 1772, 2137, 2215, 4274, 4430, 4873, 8548, 8860, 9746, 10685, 19492, 21370, 23507, 24365, 42740, 47014, 48730, 94028, 97460, 117535, 235070, 470140, 946691, 1893382, 3786764, 4733455, 9466910, 10413601, 18933820, 20827202, 41654404, 52068005, 104136010, 208272020]

約数ペア:

[(1, 208272020), (2, 104136010), (4, 52068005), (5, 41654404), (10, 20827202), (11, 18933820), (20, 10413601), (22, 9466910), (44, 4733455), (55, 3786764), (110, 1893382), (220, 946691), (443, 470140), (886, 235070), (1772, 117535), (2137, 97460), (2215, 94028), (4274, 48730), (4430, 47014), (4873, 42740), (8548, 24365), (8860, 23507), (9746, 21370), (10685, 19492)]