21620156

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 38488800

約数和(自身を除く): 16868644

約数列:

[1, 2, 4, 157, 173, 199, 314, 346, 398, 628, 692, 796, 27161, 31243, 34427, 54322, 62486, 68854, 108644, 124972, 137708, 5405039, 10810078, 21620156]

約数ペア:

[(1, 21620156), (2, 10810078), (4, 5405039), (157, 137708), (173, 124972), (199, 108644), (314, 68854), (346, 62486), (398, 54322), (628, 34427), (692, 31243), (796, 27161)]