636255

素因数分解:

$3^4\times 5^1\times {\mathrm{1571}}^1$

素因数の和:1588

約数の個数: 20

約数和(自身を含む): 1141272

約数和(自身を除く): 505017

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1571, 4713, 7855, 14139, 23565, 42417, 70695, 127251, 212085, 636255]

約数ペア:

[(1, 636255), (3, 212085), (5, 127251), (9, 70695), (15, 42417), (27, 23565), (45, 14139), (81, 7855), (135, 4713), (405, 1571)]