20176547800

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{998839}}^1$

素因数の和:998956

約数の個数: 48

約数和(自身を含む): 47374981200

約数和(自身を除く): 27198433400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 2020, 2525, 4040, 5050, 10100, 20200, 998839, 1997678, 3995356, 4994195, 7990712, 9988390, 19976780, 24970975, 39953560, 49941950, 99883900, 100882739, 199767800, 201765478, 403530956, 504413695, 807061912, 1008827390, 2017654780, 2522068475, 4035309560, 5044136950, 10088273900, 20176547800]

約数ペア:

[(1, 20176547800), (2, 10088273900), (4, 5044136950), (5, 4035309560), (8, 2522068475), (10, 2017654780), (20, 1008827390), (25, 807061912), (40, 504413695), (50, 403530956), (100, 201765478), (101, 199767800), (200, 100882739), (202, 99883900), (404, 49941950), (505, 39953560), (808, 24970975), (1010, 19976780), (2020, 9988390), (2525, 7990712), (4040, 4994195), (5050, 3995356), (10100, 1997678), (20200, 998839)]