21561320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49003}}^1$

素因数の和:49025

約数の個数: 32

約数和(自身を含む): 52924320

約数和(自身を除く): 31363000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49003, 98006, 196012, 245015, 392024, 490030, 539033, 980060, 1078066, 1960120, 2156132, 2695165, 4312264, 5390330, 10780660, 21561320]

約数ペア:

[(1, 21561320), (2, 10780660), (4, 5390330), (5, 4312264), (8, 2695165), (10, 2156132), (11, 1960120), (20, 1078066), (22, 980060), (40, 539033), (44, 490030), (55, 392024), (88, 245015), (110, 196012), (220, 98006), (440, 49003)]