1297550020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4990577}}^1$

素因数の和:4990599

約数の個数: 24

約数和(自身を含む): 2934459864

約数和(自身を除く): 1636909844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4990577, 9981154, 19962308, 24952885, 49905770, 64877501, 99811540, 129755002, 259510004, 324387505, 648775010, 1297550020]

約数ペア:

[(1, 1297550020), (2, 648775010), (4, 324387505), (5, 259510004), (10, 129755002), (13, 99811540), (20, 64877501), (26, 49905770), (52, 24952885), (65, 19962308), (130, 9981154), (260, 4990577)]