20405085

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{33179}}^1$

素因数の和:33228

約数の個数: 16

約数和(自身を含む): 33445440

約数和(自身を除く): 13040355

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 33179, 99537, 165895, 497685, 1360339, 4081017, 6801695, 20405085]

約数ペア:

[(1, 20405085), (3, 6801695), (5, 4081017), (15, 1360339), (41, 497685), (123, 165895), (205, 99537), (615, 33179)]