21309130

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 39403728

約数和(自身を除く): 18094598

約数列:

[1, 2, 5, 10, 61, 122, 181, 193, 305, 362, 386, 610, 905, 965, 1810, 1930, 11041, 11773, 22082, 23546, 34933, 55205, 58865, 69866, 110410, 117730, 174665, 349330, 2130913, 4261826, 10654565, 21309130]

約数ペア:

[(1, 21309130), (2, 10654565), (5, 4261826), (10, 2130913), (61, 349330), (122, 174665), (181, 117730), (193, 110410), (305, 69866), (362, 58865), (386, 55205), (610, 34933), (905, 23546), (965, 22082), (1810, 11773), (1930, 11041)]