728740

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{439}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 1552320

約数和(自身を除く): 823580

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 439, 830, 878, 1660, 1756, 2195, 4390, 8780, 36437, 72874, 145748, 182185, 364370, 728740]

約数ペア:

[(1, 728740), (2, 364370), (4, 182185), (5, 145748), (10, 72874), (20, 36437), (83, 8780), (166, 4390), (332, 2195), (415, 1756), (439, 1660), (830, 878)]