19881140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12583}}^1$

素因数の和:12671

約数の個数: 24

約数和(自身を含む): 42282240

約数和(自身を除く): 22401100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12583, 25166, 50332, 62915, 125830, 251660, 994057, 1988114, 3976228, 4970285, 9940570, 19881140]

約数ペア:

[(1, 19881140), (2, 9940570), (4, 4970285), (5, 3976228), (10, 1988114), (20, 994057), (79, 251660), (158, 125830), (316, 62915), (395, 50332), (790, 25166), (1580, 12583)]