665080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1303

約数の個数: 32

約数和(自身を含む): 1612800

約数和(自身を除く): 947720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1279, 2558, 5116, 6395, 10232, 12790, 16627, 25580, 33254, 51160, 66508, 83135, 133016, 166270, 332540, 665080]

約数ペア:

[(1, 665080), (2, 332540), (4, 166270), (5, 133016), (8, 83135), (10, 66508), (13, 51160), (20, 33254), (26, 25580), (40, 16627), (52, 12790), (65, 10232), (104, 6395), (130, 5116), (260, 2558), (520, 1279)]