20784999

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2699}}^1$

素因数の和:2870

約数の個数: 16

約数和(自身を含む): 29548800

約数和(自身を除く): 8763801

約数列:

[1, 3, 17, 51, 151, 453, 2567, 2699, 7701, 8097, 45883, 137649, 407549, 1222647, 6928333, 20784999]

約数ペア:

[(1, 20784999), (3, 6928333), (17, 1222647), (51, 407549), (151, 137649), (453, 45883), (2567, 8097), (2699, 7701)]