19962040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71293}}^1$

素因数の和:71311

約数の個数: 32

約数和(自身を含む): 51331680

約数和(自身を除く): 31369640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71293, 142586, 285172, 356465, 499051, 570344, 712930, 998102, 1425860, 1996204, 2495255, 2851720, 3992408, 4990510, 9981020, 19962040]

約数ペア:

[(1, 19962040), (2, 9981020), (4, 4990510), (5, 3992408), (7, 2851720), (8, 2495255), (10, 1996204), (14, 1425860), (20, 998102), (28, 712930), (35, 570344), (40, 499051), (56, 356465), (70, 285172), (140, 142586), (280, 71293)]