20871255

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{33937}}^1$

素因数の和:33986

約数の個数: 16

約数和(自身を含む): 34209504

約数和(自身を除く): 13338249

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 33937, 101811, 169685, 509055, 1391417, 4174251, 6957085, 20871255]

約数ペア:

[(1, 20871255), (3, 6957085), (5, 4174251), (15, 1391417), (41, 509055), (123, 169685), (205, 101811), (615, 33937)]