20427825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2251}}^1$

素因数の和:2286

約数の個数: 36

約数和(自身を含む): 37139984

約数和(自身を除く): 16712159

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2251, 3025, 6753, 9075, 11255, 24761, 33765, 56275, 74283, 123805, 168825, 272371, 371415, 619025, 817113, 1361855, 1857075, 4085565, 6809275, 20427825]

約数ペア:

[(1, 20427825), (3, 6809275), (5, 4085565), (11, 1857075), (15, 1361855), (25, 817113), (33, 619025), (55, 371415), (75, 272371), (121, 168825), (165, 123805), (275, 74283), (363, 56275), (605, 33765), (825, 24761), (1815, 11255), (2251, 9075), (3025, 6753)]