81543490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2767}}^1$

素因数の和:3202

約数の個数: 32

約数和(自身を含む): 168205824

約数和(自身を除く): 86662334

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 421, 842, 2105, 2767, 2947, 4210, 5534, 5894, 13835, 14735, 19369, 27670, 29470, 38738, 96845, 193690, 1164907, 2329814, 5824535, 8154349, 11649070, 16308698, 40771745, 81543490]

約数ペア:

[(1, 81543490), (2, 40771745), (5, 16308698), (7, 11649070), (10, 8154349), (14, 5824535), (35, 2329814), (70, 1164907), (421, 193690), (842, 96845), (2105, 38738), (2767, 29470), (2947, 27670), (4210, 19369), (5534, 14735), (5894, 13835)]