20869076

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 38786580

約数和(自身を除く): 17917504

約数列:

[1, 2, 4, 31, 61, 62, 89, 122, 124, 178, 244, 356, 961, 1891, 1922, 2759, 3782, 3844, 5429, 5518, 7564, 10858, 11036, 21716, 58621, 85529, 117242, 168299, 171058, 234484, 336598, 342116, 673196, 5217269, 10434538, 20869076]

約数ペア:

[(1, 20869076), (2, 10434538), (4, 5217269), (31, 673196), (61, 342116), (62, 336598), (89, 234484), (122, 171058), (124, 168299), (178, 117242), (244, 85529), (356, 58621), (961, 21716), (1891, 11036), (1922, 10858), (2759, 7564), (3782, 5518), (3844, 5429)]