21387562

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{523}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 38633472

約数和(自身を除く): 17245910

約数列:

[1, 2, 7, 14, 23, 46, 127, 161, 254, 322, 523, 889, 1046, 1778, 2921, 3661, 5842, 7322, 12029, 20447, 24058, 40894, 66421, 84203, 132842, 168406, 464947, 929894, 1527683, 3055366, 10693781, 21387562]

約数ペア:

[(1, 21387562), (2, 10693781), (7, 3055366), (14, 1527683), (23, 929894), (46, 464947), (127, 168406), (161, 132842), (254, 84203), (322, 66421), (523, 40894), (889, 24058), (1046, 20447), (1778, 12029), (2921, 7322), (3661, 5842)]