28931420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1049}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 69854400

約数和(自身を除く): 40922980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1049, 1379, 1970, 2098, 2758, 3940, 4196, 5245, 5516, 6895, 7343, 10490, 13790, 14686, 20980, 27580, 29372, 36715, 73430, 146860, 206653, 413306, 826612, 1033265, 1446571, 2066530, 2893142, 4133060, 5786284, 7232855, 14465710, 28931420]

約数ペア:

[(1, 28931420), (2, 14465710), (4, 7232855), (5, 5786284), (7, 4133060), (10, 2893142), (14, 2066530), (20, 1446571), (28, 1033265), (35, 826612), (70, 413306), (140, 206653), (197, 146860), (394, 73430), (788, 36715), (985, 29372), (1049, 27580), (1379, 20980), (1970, 14686), (2098, 13790), (2758, 10490), (3940, 7343), (4196, 6895), (5245, 5516)]