21686440

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14653}}^1$

素因数の和:14701

約数の個数: 32

約数和(自身を含む): 50116680

約数和(自身を除く): 28430240

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14653, 29306, 58612, 73265, 117224, 146530, 293060, 542161, 586120, 1084322, 2168644, 2710805, 4337288, 5421610, 10843220, 21686440]

約数ペア:

[(1, 21686440), (2, 10843220), (4, 5421610), (5, 4337288), (8, 2710805), (10, 2168644), (20, 1084322), (37, 586120), (40, 542161), (74, 293060), (148, 146530), (185, 117224), (296, 73265), (370, 58612), (740, 29306), (1480, 14653)]