20988188

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{6841}}^1$

素因数の和:6917

約数の個数: 24

約数和(自身を含む): 40230960

約数和(自身を除く): 19242772

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 236, 767, 1534, 3068, 6841, 13682, 27364, 88933, 177866, 355732, 403619, 807238, 1614476, 5247047, 10494094, 20988188]

約数ペア:

[(1, 20988188), (2, 10494094), (4, 5247047), (13, 1614476), (26, 807238), (52, 403619), (59, 355732), (118, 177866), (236, 88933), (767, 27364), (1534, 13682), (3068, 6841)]