981400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{701}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 2611440

約数和(自身を除く): 1630040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 701, 1400, 1402, 2804, 3505, 4907, 5608, 7010, 9814, 14020, 17525, 19628, 24535, 28040, 35050, 39256, 49070, 70100, 98140, 122675, 140200, 196280, 245350, 490700, 981400]

約数ペア:

[(1, 981400), (2, 490700), (4, 245350), (5, 196280), (7, 140200), (8, 122675), (10, 98140), (14, 70100), (20, 49070), (25, 39256), (28, 35050), (35, 28040), (40, 24535), (50, 19628), (56, 17525), (70, 14020), (100, 9814), (140, 7010), (175, 5608), (200, 4907), (280, 3505), (350, 2804), (700, 1402), (701, 1400)]