720657

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:91

約数の個数: 40

約数和(自身を含む): 1300992

約数和(自身を除く): 580335

約数列:

[1, 3, 7, 9, 21, 27, 31, 41, 63, 81, 93, 123, 189, 217, 279, 287, 369, 567, 651, 837, 861, 1107, 1271, 1953, 2511, 2583, 3321, 3813, 5859, 7749, 8897, 11439, 17577, 23247, 26691, 34317, 80073, 102951, 240219, 720657]

約数ペア:

[(1, 720657), (3, 240219), (7, 102951), (9, 80073), (21, 34317), (27, 26691), (31, 23247), (41, 17577), (63, 11439), (81, 8897), (93, 7749), (123, 5859), (189, 3813), (217, 3321), (279, 2583), (287, 2511), (369, 1953), (567, 1271), (651, 1107), (837, 861)]