21892180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1087}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 27459500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 1007, 1060, 1087, 2014, 2174, 4028, 4348, 5035, 5435, 10070, 10870, 20140, 20653, 21740, 41306, 57611, 82612, 103265, 115222, 206530, 230444, 288055, 413060, 576110, 1094609, 1152220, 2189218, 4378436, 5473045, 10946090, 21892180]

約数ペア:

[(1, 21892180), (2, 10946090), (4, 5473045), (5, 4378436), (10, 2189218), (19, 1152220), (20, 1094609), (38, 576110), (53, 413060), (76, 288055), (95, 230444), (106, 206530), (190, 115222), (212, 103265), (265, 82612), (380, 57611), (530, 41306), (1007, 21740), (1060, 20653), (1087, 20140), (2014, 10870), (2174, 10070), (4028, 5435), (4348, 5035)]