21428220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32467}}^1$

素因数の和:32490

約数の個数: 48

約数和(自身を含む): 65455488

約数和(自身を除く): 44027268

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 32467, 64934, 97401, 129868, 162335, 194802, 324670, 357137, 389604, 487005, 649340, 714274, 974010, 1071411, 1428548, 1785685, 1948020, 2142822, 3571370, 4285644, 5357055, 7142740, 10714110, 21428220]

約数ペア:

[(1, 21428220), (2, 10714110), (3, 7142740), (4, 5357055), (5, 4285644), (6, 3571370), (10, 2142822), (11, 1948020), (12, 1785685), (15, 1428548), (20, 1071411), (22, 974010), (30, 714274), (33, 649340), (44, 487005), (55, 389604), (60, 357137), (66, 324670), (110, 194802), (132, 162335), (165, 129868), (220, 97401), (330, 64934), (660, 32467)]