19960520

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{877}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 45041400

約数和(自身を除く): 25080880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 877, 1138, 1754, 2276, 2845, 3508, 4385, 4552, 5690, 7016, 8770, 11380, 17540, 22760, 35080, 499013, 998026, 1996052, 2495065, 3992104, 4990130, 9980260, 19960520]

約数ペア:

[(1, 19960520), (2, 9980260), (4, 4990130), (5, 3992104), (8, 2495065), (10, 1996052), (20, 998026), (40, 499013), (569, 35080), (877, 22760), (1138, 17540), (1754, 11380), (2276, 8770), (2845, 7016), (3508, 5690), (4385, 4552)]