81419690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67289}}^1$

素因数の和:67318

約数の個数: 24

約数和(自身を含む): 161092260

約数和(自身を除く): 79672570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 67289, 134578, 336445, 672890, 740179, 1480358, 3700895, 7401790, 8141969, 16283938, 40709845, 81419690]

約数ペア:

[(1, 81419690), (2, 40709845), (5, 16283938), (10, 8141969), (11, 7401790), (22, 3700895), (55, 1480358), (110, 740179), (121, 672890), (242, 336445), (605, 134578), (1210, 67289)]