20662947

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{577}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 31378464

約数和(自身を除く): 10715517

約数列:

[1, 3, 9, 23, 69, 173, 207, 519, 577, 1557, 1731, 3979, 5193, 11937, 13271, 35811, 39813, 99821, 119439, 299463, 898389, 2295883, 6887649, 20662947]

約数ペア:

[(1, 20662947), (3, 6887649), (9, 2295883), (23, 898389), (69, 299463), (173, 119439), (207, 99821), (519, 39813), (577, 35811), (1557, 13271), (1731, 11937), (3979, 5193)]