648945

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:67

約数の個数: 64

約数和(自身を含む): 1382400

約数和(自身を除く): 733455

約数列:

[1, 3, 5, 9, 11, 15, 19, 23, 27, 33, 45, 55, 57, 69, 95, 99, 115, 135, 165, 171, 207, 209, 253, 285, 297, 345, 437, 495, 513, 621, 627, 759, 855, 1035, 1045, 1265, 1311, 1485, 1881, 2185, 2277, 2565, 3105, 3135, 3795, 3933, 4807, 5643, 6555, 6831, 9405, 11385, 11799, 14421, 19665, 24035, 28215, 34155, 43263, 58995, 72105, 129789, 216315, 648945]

約数ペア:

[(1, 648945), (3, 216315), (5, 129789), (9, 72105), (11, 58995), (15, 43263), (19, 34155), (23, 28215), (27, 24035), (33, 19665), (45, 14421), (55, 11799), (57, 11385), (69, 9405), (95, 6831), (99, 6555), (115, 5643), (135, 4807), (165, 3933), (171, 3795), (207, 3135), (209, 3105), (253, 2565), (285, 2277), (297, 2185), (345, 1881), (437, 1485), (495, 1311), (513, 1265), (621, 1045), (627, 1035), (759, 855)]