15978897

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:171

約数の個数: 48

約数和(自身を含む): 26770240

約数和(自身を除く): 10791343

約数列:

[1, 3, 9, 11, 27, 33, 67, 73, 99, 121, 201, 219, 297, 363, 603, 657, 737, 803, 1089, 1809, 1971, 2211, 2409, 3267, 4891, 6633, 7227, 8107, 8833, 14673, 19899, 21681, 24321, 26499, 44019, 53801, 72963, 79497, 132057, 161403, 218889, 238491, 484209, 591811, 1452627, 1775433, 5326299, 15978897]

約数ペア:

[(1, 15978897), (3, 5326299), (9, 1775433), (11, 1452627), (27, 591811), (33, 484209), (67, 238491), (73, 218889), (99, 161403), (121, 132057), (201, 79497), (219, 72963), (297, 53801), (363, 44019), (603, 26499), (657, 24321), (737, 21681), (803, 19899), (1089, 14673), (1809, 8833), (1971, 8107), (2211, 7227), (2409, 6633), (3267, 4891)]