257417997070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1980138439}}^1$

素因数の和:1980138459

約数の個数: 16

約数和(自身を含む): 498994886880

約数和(自身を除く): 241576889810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 1980138439, 3960276878, 9900692195, 19801384390, 25741799707, 51483599414, 128708998535, 257417997070]

約数ペア:

[(1, 257417997070), (2, 128708998535), (5, 51483599414), (10, 25741799707), (13, 19801384390), (26, 9900692195), (65, 3960276878), (130, 1980138439)]