18215145

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 35562240

約数和(自身を除く): 17347095

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 97, 107, 117, 135, 195, 291, 321, 351, 485, 535, 585, 873, 963, 1261, 1391, 1455, 1605, 1755, 2619, 2889, 3783, 4173, 4365, 4815, 6305, 6955, 10379, 11349, 12519, 13095, 14445, 18915, 20865, 31137, 34047, 37557, 51895, 56745, 62595, 93411, 134927, 155685, 170235, 187785, 280233, 404781, 467055, 674635, 1214343, 1401165, 2023905, 3643029, 6071715, 18215145]

約数ペア:

[(1, 18215145), (3, 6071715), (5, 3643029), (9, 2023905), (13, 1401165), (15, 1214343), (27, 674635), (39, 467055), (45, 404781), (65, 280233), (97, 187785), (107, 170235), (117, 155685), (135, 134927), (195, 93411), (291, 62595), (321, 56745), (351, 51895), (485, 37557), (535, 34047), (585, 31137), (873, 20865), (963, 18915), (1261, 14445), (1391, 13095), (1455, 12519), (1605, 11349), (1755, 10379), (2619, 6955), (2889, 6305), (3783, 4815), (4173, 4365)]