81978369

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7691}}^1$

素因数の和:7741

約数の個数: 32

約数和(自身を含む): 132917760

約数和(自身を除く): 50939391

約数列:

[1, 3, 11, 17, 19, 33, 51, 57, 187, 209, 323, 561, 627, 969, 3553, 7691, 10659, 23073, 84601, 130747, 146129, 253803, 392241, 438387, 1438217, 1607419, 2484193, 4314651, 4822257, 7452579, 27326123, 81978369]

約数ペア:

[(1, 81978369), (3, 27326123), (11, 7452579), (17, 4822257), (19, 4314651), (33, 2484193), (51, 1607419), (57, 1438217), (187, 438387), (209, 392241), (323, 253803), (561, 146129), (627, 130747), (969, 84601), (3553, 23073), (7691, 10659)]