639918170

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{810023}}^1$

素因数の和:810109

約数の個数: 16

約数和(自身を含む): 1166434560

約数和(自身を除く): 526516390

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 810023, 1620046, 4050115, 8100230, 63991817, 127983634, 319959085, 639918170]

約数ペア:

[(1, 639918170), (2, 319959085), (5, 127983634), (10, 63991817), (79, 8100230), (158, 4050115), (395, 1620046), (790, 810023)]