81257990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{5639}}^1$

素因数の和:5788

約数の個数: 32

約数和(自身を含む): 160807680

約数和(自身を除く): 79549690

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 131, 262, 655, 1310, 1441, 2882, 5639, 7205, 11278, 14410, 28195, 56390, 62029, 124058, 310145, 620290, 738709, 1477418, 3693545, 7387090, 8125799, 16251598, 40628995, 81257990]

約数ペア:

[(1, 81257990), (2, 40628995), (5, 16251598), (10, 8125799), (11, 7387090), (22, 3693545), (55, 1477418), (110, 738709), (131, 620290), (262, 310145), (655, 124058), (1310, 62029), (1441, 56390), (2882, 28195), (5639, 14410), (7205, 11278)]