20144540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77479}}^1$

素因数の和:77501

約数の個数: 24

約数和(自身を含む): 45558240

約数和(自身を除く): 25413700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77479, 154958, 309916, 387395, 774790, 1007227, 1549580, 2014454, 4028908, 5036135, 10072270, 20144540]

約数ペア:

[(1, 20144540), (2, 10072270), (4, 5036135), (5, 4028908), (10, 2014454), (13, 1549580), (20, 1007227), (26, 774790), (52, 387395), (65, 309916), (130, 154958), (260, 77479)]