81977865

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{1871}}^1$

素因数の和:2029

約数の個数: 32

約数和(自身を含む): 138018816

約数和(自身を除く): 56040951

約数列:

[1, 3, 5, 15, 23, 69, 115, 127, 345, 381, 635, 1871, 1905, 2921, 5613, 8763, 9355, 14605, 28065, 43033, 43815, 129099, 215165, 237617, 645495, 712851, 1188085, 3564255, 5465191, 16395573, 27325955, 81977865]

約数ペア:

[(1, 81977865), (3, 27325955), (5, 16395573), (15, 5465191), (23, 3564255), (69, 1188085), (115, 712851), (127, 645495), (345, 237617), (381, 215165), (635, 129099), (1871, 43815), (1905, 43033), (2921, 28065), (5613, 14605), (8763, 9355)]