21054956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2579}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 39948720

約数和(自身を除く): 18893764

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2579, 4082, 5158, 8164, 10316, 33527, 67054, 134108, 404903, 809806, 1619612, 5263739, 10527478, 21054956]

約数ペア:

[(1, 21054956), (2, 10527478), (4, 5263739), (13, 1619612), (26, 809806), (52, 404903), (157, 134108), (314, 67054), (628, 33527), (2041, 10316), (2579, 8164), (4082, 5158)]