21365188

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2617}}^1$

素因数の和:2791

約数の個数: 24

約数和(自身を含む): 40537112

約数和(自身を除く): 19171924

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2617, 4082, 5234, 8164, 10468, 34021, 68042, 136084, 410869, 821738, 1643476, 5341297, 10682594, 21365188]

約数ペア:

[(1, 21365188), (2, 10682594), (4, 5341297), (13, 1643476), (26, 821738), (52, 410869), (157, 136084), (314, 68042), (628, 34021), (2041, 10468), (2617, 8164), (4082, 5234)]