19953080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71261}}^1$

素因数の和:71279

約数の個数: 32

約数和(自身を含む): 51308640

約数和(自身を除く): 31355560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71261, 142522, 285044, 356305, 498827, 570088, 712610, 997654, 1425220, 1995308, 2494135, 2850440, 3990616, 4988270, 9976540, 19953080]

約数ペア:

[(1, 19953080), (2, 9976540), (4, 4988270), (5, 3990616), (7, 2850440), (8, 2494135), (10, 1995308), (14, 1425220), (20, 997654), (28, 712610), (35, 570088), (40, 498827), (56, 356305), (70, 285044), (140, 142522), (280, 71261)]