20195140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2153}}^1$

素因数の和:2236

約数の個数: 48

約数和(自身を含む): 49214592

約数和(自身を除く): 29019452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2153, 2345, 4306, 4690, 8612, 9380, 10765, 15071, 21530, 30142, 43060, 60284, 75355, 144251, 150710, 288502, 301420, 577004, 721255, 1009757, 1442510, 2019514, 2885020, 4039028, 5048785, 10097570, 20195140]

約数ペア:

[(1, 20195140), (2, 10097570), (4, 5048785), (5, 4039028), (7, 2885020), (10, 2019514), (14, 1442510), (20, 1009757), (28, 721255), (35, 577004), (67, 301420), (70, 288502), (134, 150710), (140, 144251), (268, 75355), (335, 60284), (469, 43060), (670, 30142), (938, 21530), (1340, 15071), (1876, 10765), (2153, 9380), (2345, 8612), (4306, 4690)]