20713791

素因数分解:

$3^1\times 7^1\times {\mathrm{757}}^1\times {\mathrm{1303}}^1$

素因数の和:2070

約数の個数: 16

約数和(自身を含む): 31629824

約数和(自身を除く): 10916033

約数列:

[1, 3, 7, 21, 757, 1303, 2271, 3909, 5299, 9121, 15897, 27363, 986371, 2959113, 6904597, 20713791]

約数ペア:

[(1, 20713791), (3, 6904597), (7, 2959113), (21, 986371), (757, 27363), (1303, 15897), (2271, 9121), (3909, 5299)]