8640970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5113}}^1$

素因数の和:5146

約数の個数: 24

約数和(自身を含む): 16845516

約数和(自身を除く): 8204546

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 5113, 10226, 25565, 51130, 66469, 132938, 332345, 664690, 864097, 1728194, 4320485, 8640970]

約数ペア:

[(1, 8640970), (2, 4320485), (5, 1728194), (10, 864097), (13, 664690), (26, 332345), (65, 132938), (130, 66469), (169, 51130), (338, 25565), (845, 10226), (1690, 5113)]