81566618

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{200903}}^1$

素因数の和:200941

約数の個数: 16

約数和(自身を含む): 144650880

約数和(自身を除く): 63084262

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 200903, 401806, 1406321, 2812642, 5826187, 11652374, 40783309, 81566618]

約数ペア:

[(1, 81566618), (2, 40783309), (7, 11652374), (14, 5826187), (29, 2812642), (58, 1406321), (203, 401806), (406, 200903)]