21000753320

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{719}}^1\times {\mathrm{4651}}^1$

素因数の和:5538

約数の個数: 64

約数和(自身を含む): 47629036800

約数和(自身を除く): 26628283480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 719, 785, 1256, 1438, 1570, 2876, 3140, 3595, 4651, 5752, 6280, 7190, 9302, 14380, 18604, 23255, 28760, 37208, 46510, 93020, 112883, 186040, 225766, 451532, 564415, 730207, 903064, 1128830, 1460414, 2257660, 2920828, 3344069, 3651035, 4515320, 5841656, 6688138, 7302070, 13376276, 14604140, 16720345, 26752552, 29208280, 33440690, 66881380, 133762760, 525018833, 1050037666, 2100075332, 2625094165, 4200150664, 5250188330, 10500376660, 21000753320]

約数ペア:

[(1, 21000753320), (2, 10500376660), (4, 5250188330), (5, 4200150664), (8, 2625094165), (10, 2100075332), (20, 1050037666), (40, 525018833), (157, 133762760), (314, 66881380), (628, 33440690), (719, 29208280), (785, 26752552), (1256, 16720345), (1438, 14604140), (1570, 13376276), (2876, 7302070), (3140, 6688138), (3595, 5841656), (4651, 4515320), (5752, 3651035), (6280, 3344069), (7190, 2920828), (9302, 2257660), (14380, 1460414), (18604, 1128830), (23255, 903064), (28760, 730207), (37208, 564415), (46510, 451532), (93020, 225766), (112883, 186040)]