786335980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{479}}^1\times {\mathrm{1039}}^1$

素因数の和:1606

約数の個数: 48

約数和(自身を含む): 1677312000

約数和(自身を除く): 890976020

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 479, 790, 958, 1039, 1580, 1916, 2078, 2395, 4156, 4790, 5195, 9580, 10390, 20780, 37841, 75682, 82081, 151364, 164162, 189205, 328324, 378410, 410405, 497681, 756820, 820810, 995362, 1641620, 1990724, 2488405, 4976810, 9953620, 39316799, 78633598, 157267196, 196583995, 393167990, 786335980]

約数ペア:

[(1, 786335980), (2, 393167990), (4, 196583995), (5, 157267196), (10, 78633598), (20, 39316799), (79, 9953620), (158, 4976810), (316, 2488405), (395, 1990724), (479, 1641620), (790, 995362), (958, 820810), (1039, 756820), (1580, 497681), (1916, 410405), (2078, 378410), (2395, 328324), (4156, 189205), (4790, 164162), (5195, 151364), (9580, 82081), (10390, 75682), (20780, 37841)]