19992070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3209}}^1$

素因数の和:3312

約数の個数: 32

約数和(自身を含む): 41601600

約数和(自身を除く): 21609530

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 3209, 6230, 6418, 16045, 22463, 32090, 44926, 112315, 224630, 285601, 571202, 1428005, 1999207, 2856010, 3998414, 9996035, 19992070]

約数ペア:

[(1, 19992070), (2, 9996035), (5, 3998414), (7, 2856010), (10, 1999207), (14, 1428005), (35, 571202), (70, 285601), (89, 224630), (178, 112315), (445, 44926), (623, 32090), (890, 22463), (1246, 16045), (3115, 6418), (3209, 6230)]