2221000280

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{178537}}^1$

素因数の和:178859

約数の個数: 32

約数和(自身を含む): 5013347040

約数和(自身を除く): 2792346760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 178537, 357074, 714148, 892685, 1428296, 1785370, 3570740, 7141480, 55525007, 111050014, 222100028, 277625035, 444200056, 555250070, 1110500140, 2221000280]

約数ペア:

[(1, 2221000280), (2, 1110500140), (4, 555250070), (5, 444200056), (8, 277625035), (10, 222100028), (20, 111050014), (40, 55525007), (311, 7141480), (622, 3570740), (1244, 1785370), (1555, 1428296), (2488, 892685), (3110, 714148), (6220, 357074), (12440, 178537)]