81921100

素因数分解:

$2^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{8111}}^1$

素因数の和:8226

約数の個数: 36

約数和(自身を含む): 179551008

約数和(自身を除く): 97629908

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 202, 404, 505, 1010, 2020, 2525, 5050, 8111, 10100, 16222, 32444, 40555, 81110, 162220, 202775, 405550, 811100, 819211, 1638422, 3276844, 4096055, 8192110, 16384220, 20480275, 40960550, 81921100]

約数ペア:

[(1, 81921100), (2, 40960550), (4, 20480275), (5, 16384220), (10, 8192110), (20, 4096055), (25, 3276844), (50, 1638422), (100, 819211), (101, 811100), (202, 405550), (404, 202775), (505, 162220), (1010, 81110), (2020, 40555), (2525, 32444), (5050, 16222), (8111, 10100)]