20190520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72109}}^1$

素因数の和:72127

約数の個数: 32

約数和(自身を含む): 51919200

約数和(自身を除く): 31728680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72109, 144218, 288436, 360545, 504763, 576872, 721090, 1009526, 1442180, 2019052, 2523815, 2884360, 4038104, 5047630, 10095260, 20190520]

約数ペア:

[(1, 20190520), (2, 10095260), (4, 5047630), (5, 4038104), (7, 2884360), (8, 2523815), (10, 2019052), (14, 1442180), (20, 1009526), (28, 721090), (35, 576872), (40, 504763), (56, 360545), (70, 288436), (140, 144218), (280, 72109)]