20988105

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34127}}^1$

素因数の和:34176

約数の個数: 16

約数和(自身を含む): 34401024

約数和(自身を除く): 13412919

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34127, 102381, 170635, 511905, 1399207, 4197621, 6996035, 20988105]

約数ペア:

[(1, 20988105), (3, 6996035), (5, 4197621), (15, 1399207), (41, 511905), (123, 170635), (205, 102381), (615, 34127)]