20421693

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{5009}}^1$

素因数の和:5169

約数の個数: 16

約数和(自身を含む): 30460800

約数和(自身を除く): 10039107

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 5009, 15027, 45081, 135243, 756359, 2269077, 6807231, 20421693]

約数ペア:

[(1, 20421693), (3, 6807231), (9, 2269077), (27, 756359), (151, 135243), (453, 45081), (1359, 15027), (4077, 5009)]