20720908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{9719}}^1$

素因数の和:9777

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 19286612

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 9719, 19438, 38876, 126347, 252694, 398479, 505388, 796958, 1593916, 5180227, 10360454, 20720908]

約数ペア:

[(1, 20720908), (2, 10360454), (4, 5180227), (13, 1593916), (26, 796958), (41, 505388), (52, 398479), (82, 252694), (164, 126347), (533, 38876), (1066, 19438), (2132, 9719)]