201780620

素因数分解:

$2^2\times 5^1\times {\mathrm{1319}}^1\times {\mathrm{7649}}^1$

素因数の和:8977

約数の個数: 24

約数和(自身を含む): 424116000

約数和(自身を除く): 222335380

約数列:

[1, 2, 4, 5, 10, 20, 1319, 2638, 5276, 6595, 7649, 13190, 15298, 26380, 30596, 38245, 76490, 152980, 10089031, 20178062, 40356124, 50445155, 100890310, 201780620]

約数ペア:

[(1, 201780620), (2, 100890310), (4, 50445155), (5, 40356124), (10, 20178062), (20, 10089031), (1319, 152980), (2638, 76490), (5276, 38245), (6595, 30596), (7649, 26380), (13190, 15298)]