640082066

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{38287}}^1$

素因数の和:38945

約数の個数: 16

約数和(自身を含む): 1035613824

約数和(自身を除く): 395531758

約数列:

[1, 2, 13, 26, 643, 1286, 8359, 16718, 38287, 76574, 497731, 995462, 24618541, 49237082, 320041033, 640082066]

約数ペア:

[(1, 640082066), (2, 320041033), (13, 49237082), (26, 24618541), (643, 995462), (1286, 497731), (8359, 76574), (16718, 38287)]