20888965460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{244087}}^1$

素因数の和:244496

約数の個数: 48

約数和(自身を含む): 47977937280

約数和(自身を除く): 27088971820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 389, 778, 1556, 1945, 3890, 4279, 7780, 8558, 17116, 21395, 42790, 85580, 244087, 488174, 976348, 1220435, 2440870, 2684957, 4881740, 5369914, 10739828, 13424785, 26849570, 53699140, 94949843, 189899686, 379799372, 474749215, 949498430, 1044448273, 1898996860, 2088896546, 4177793092, 5222241365, 10444482730, 20888965460]

約数ペア:

[(1, 20888965460), (2, 10444482730), (4, 5222241365), (5, 4177793092), (10, 2088896546), (11, 1898996860), (20, 1044448273), (22, 949498430), (44, 474749215), (55, 379799372), (110, 189899686), (220, 94949843), (389, 53699140), (778, 26849570), (1556, 13424785), (1945, 10739828), (3890, 5369914), (4279, 4881740), (7780, 2684957), (8558, 2440870), (17116, 1220435), (21395, 976348), (42790, 488174), (85580, 244087)]