20426615

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1777}}^1$

素因数の和:1823

約数の個数: 24

約数和(自身を含む): 28376880

約数和(自身を除く): 7950265

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1777, 2299, 8885, 11495, 19547, 33763, 97735, 168815, 215017, 371393, 1075085, 1856965, 4085323, 20426615]

約数ペア:

[(1, 20426615), (5, 4085323), (11, 1856965), (19, 1075085), (55, 371393), (95, 215017), (121, 168815), (209, 97735), (605, 33763), (1045, 19547), (1777, 11495), (2299, 8885)]