19640740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2647}}^1$

素因数の和:2716

約数の個数: 48

約数和(自身を含む): 48045312

約数和(自身を除く): 28404572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 2647, 3710, 5294, 7420, 10588, 13235, 18529, 26470, 37058, 52940, 74116, 92645, 140291, 185290, 280582, 370580, 561164, 701455, 982037, 1402910, 1964074, 2805820, 3928148, 4910185, 9820370, 19640740]

約数ペア:

[(1, 19640740), (2, 9820370), (4, 4910185), (5, 3928148), (7, 2805820), (10, 1964074), (14, 1402910), (20, 982037), (28, 701455), (35, 561164), (53, 370580), (70, 280582), (106, 185290), (140, 140291), (212, 92645), (265, 74116), (371, 52940), (530, 37058), (742, 26470), (1060, 18529), (1484, 13235), (1855, 10588), (2647, 7420), (3710, 5294)]