12920859

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:456

約数の個数: 36

約数和(自身を含む): 22034376

約数和(自身を除く): 9113517

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 353, 441, 581, 747, 1059, 1743, 2471, 3177, 4067, 5229, 7413, 12201, 17297, 22239, 29299, 36603, 51891, 87897, 155673, 205093, 263691, 615279, 1435651, 1845837, 4306953, 12920859]

約数ペア:

[(1, 12920859), (3, 4306953), (7, 1845837), (9, 1435651), (21, 615279), (49, 263691), (63, 205093), (83, 155673), (147, 87897), (249, 51891), (353, 36603), (441, 29299), (581, 22239), (747, 17297), (1059, 12201), (1743, 7413), (2471, 5229), (3177, 4067)]