20458075

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6763}}^1$

素因数の和:6795

約数の個数: 18

約数和(自身を含む): 27887972

約数和(自身を除く): 7429897

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6763, 33815, 74393, 169075, 371965, 818323, 1859825, 4091615, 20458075]

約数ペア:

[(1, 20458075), (5, 4091615), (11, 1859825), (25, 818323), (55, 371965), (121, 169075), (275, 74393), (605, 33815), (3025, 6763)]