20638904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18041}}^1$

素因数の和:18071

約数の個数: 32

約数和(自身を含む): 45465840

約数和(自身を除く): 24826936

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18041, 36082, 72164, 144328, 198451, 234533, 396902, 469066, 793804, 938132, 1587608, 1876264, 2579863, 5159726, 10319452, 20638904]

約数ペア:

[(1, 20638904), (2, 10319452), (4, 5159726), (8, 2579863), (11, 1876264), (13, 1587608), (22, 938132), (26, 793804), (44, 469066), (52, 396902), (88, 234533), (104, 198451), (143, 144328), (286, 72164), (572, 36082), (1144, 18041)]