20879943

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7829}}^1$

素因数の和:7966

約数の個数: 16

約数和(自身を含む): 32071680

約数和(自身を除く): 11191737

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7829, 23487, 54803, 164409, 994283, 2982849, 6959981, 20879943]

約数ペア:

[(1, 20879943), (3, 6959981), (7, 2982849), (21, 994283), (127, 164409), (381, 54803), (889, 23487), (2667, 7829)]