138020900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{17471}}^1$

素因数の和:17564

約数の個数: 36

約数和(自身を含む): 303313920

約数和(自身を除く): 165293020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 17471, 34942, 69884, 87355, 174710, 349420, 436775, 873550, 1380209, 1747100, 2760418, 5520836, 6901045, 13802090, 27604180, 34505225, 69010450, 138020900]

約数ペア:

[(1, 138020900), (2, 69010450), (4, 34505225), (5, 27604180), (10, 13802090), (20, 6901045), (25, 5520836), (50, 2760418), (79, 1747100), (100, 1380209), (158, 873550), (316, 436775), (395, 349420), (790, 174710), (1580, 87355), (1975, 69884), (3950, 34942), (7900, 17471)]