21118448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101531}}^1$

素因数の和:101552

約数の個数: 20

約数和(自身を含む): 44064888

約数和(自身を除く): 22946440

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101531, 203062, 406124, 812248, 1319903, 1624496, 2639806, 5279612, 10559224, 21118448]

約数ペア:

[(1, 21118448), (2, 10559224), (4, 5279612), (8, 2639806), (13, 1624496), (16, 1319903), (26, 812248), (52, 406124), (104, 203062), (208, 101531)]