813700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:196

約数の個数: 36

約数和(自身を含む): 1805440

約数和(自身を除く): 991740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 103, 158, 206, 316, 395, 412, 515, 790, 1030, 1580, 1975, 2060, 2575, 3950, 5150, 7900, 8137, 10300, 16274, 32548, 40685, 81370, 162740, 203425, 406850, 813700]

約数ペア:

[(1, 813700), (2, 406850), (4, 203425), (5, 162740), (10, 81370), (20, 40685), (25, 32548), (50, 16274), (79, 10300), (100, 8137), (103, 7900), (158, 5150), (206, 3950), (316, 2575), (395, 2060), (412, 1975), (515, 1580), (790, 1030)]