81857718

素因数分解:

$2^1\times 3^2\times {\mathrm{97}}^1\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:549

約数の個数: 48

約数和(自身を含む): 180887616

約数和(自身を除く): 99029898

約数列:

[1, 2, 3, 6, 9, 18, 97, 173, 194, 271, 291, 346, 519, 542, 582, 813, 873, 1038, 1557, 1626, 1746, 2439, 3114, 4878, 16781, 26287, 33562, 46883, 50343, 52574, 78861, 93766, 100686, 140649, 151029, 157722, 236583, 281298, 302058, 421947, 473166, 843894, 4547651, 9095302, 13642953, 27285906, 40928859, 81857718]

約数ペア:

[(1, 81857718), (2, 40928859), (3, 27285906), (6, 13642953), (9, 9095302), (18, 4547651), (97, 843894), (173, 473166), (194, 421947), (271, 302058), (291, 281298), (346, 236583), (519, 157722), (542, 151029), (582, 140649), (813, 100686), (873, 93766), (1038, 78861), (1557, 52574), (1626, 50343), (1746, 46883), (2439, 33562), (3114, 26287), (4878, 16781)]