21159820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96181}}^1$

素因数の和:96201

約数の個数: 24

約数和(自身を含む): 48475728

約数和(自身を除く): 27315908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96181, 192362, 384724, 480905, 961810, 1057991, 1923620, 2115982, 4231964, 5289955, 10579910, 21159820]

約数ペア:

[(1, 21159820), (2, 10579910), (4, 5289955), (5, 4231964), (10, 2115982), (11, 1923620), (20, 1057991), (22, 961810), (44, 480905), (55, 384724), (110, 192362), (220, 96181)]