18388485

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 16862715

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 67, 95, 107, 135, 171, 201, 285, 321, 335, 513, 535, 603, 855, 963, 1005, 1273, 1605, 1809, 2033, 2565, 2889, 3015, 3819, 4815, 6099, 6365, 7169, 9045, 10165, 11457, 14445, 18297, 19095, 21507, 30495, 34371, 35845, 54891, 57285, 64521, 91485, 107535, 136211, 171855, 193563, 274455, 322605, 408633, 681055, 967815, 1225899, 2043165, 3677697, 6129495, 18388485]

約数ペア:

[(1, 18388485), (3, 6129495), (5, 3677697), (9, 2043165), (15, 1225899), (19, 967815), (27, 681055), (45, 408633), (57, 322605), (67, 274455), (95, 193563), (107, 171855), (135, 136211), (171, 107535), (201, 91485), (285, 64521), (321, 57285), (335, 54891), (513, 35845), (535, 34371), (603, 30495), (855, 21507), (963, 19095), (1005, 18297), (1273, 14445), (1605, 11457), (1809, 10165), (2033, 9045), (2565, 7169), (2889, 6365), (3015, 6099), (3819, 4815)]