21785380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37561}}^1$

素因数の和:37599

約数の個数: 24

約数和(自身を含む): 47328120

約数和(自身を除く): 25542740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37561, 75122, 150244, 187805, 375610, 751220, 1089269, 2178538, 4357076, 5446345, 10892690, 21785380]

約数ペア:

[(1, 21785380), (2, 10892690), (4, 5446345), (5, 4357076), (10, 2178538), (20, 1089269), (29, 751220), (58, 375610), (116, 187805), (145, 150244), (290, 75122), (580, 37561)]