80931879

素因数分解:

$3^5\times 7^3\times {\mathrm{971}}^1$

素因数の和:1007

約数の個数: 48

約数和(自身を含む): 141523200

約数和(自身を除く): 60591321

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 343, 441, 567, 971, 1029, 1323, 1701, 2913, 3087, 3969, 6797, 8739, 9261, 11907, 20391, 26217, 27783, 47579, 61173, 78651, 83349, 142737, 183519, 235953, 333053, 428211, 550557, 999159, 1284633, 1651671, 2997477, 3853899, 8992431, 11561697, 26977293, 80931879]

約数ペア:

[(1, 80931879), (3, 26977293), (7, 11561697), (9, 8992431), (21, 3853899), (27, 2997477), (49, 1651671), (63, 1284633), (81, 999159), (147, 550557), (189, 428211), (243, 333053), (343, 235953), (441, 183519), (567, 142737), (971, 83349), (1029, 78651), (1323, 61173), (1701, 47579), (2913, 27783), (3087, 26217), (3969, 20391), (6797, 11907), (8739, 9261)]