215707965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 392014080

約数和(自身を除く): 176306115

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 89, 111, 165, 185, 267, 397, 407, 445, 555, 979, 1191, 1221, 1335, 1985, 2035, 2937, 3293, 4367, 4895, 5955, 6105, 9879, 13101, 14685, 14689, 16465, 21835, 35333, 36223, 44067, 49395, 65505, 73445, 105999, 108669, 161579, 176665, 181115, 220335, 388663, 484737, 529995, 543345, 807895, 1165989, 1307321, 1943315, 2423685, 3921963, 5829945, 6536605, 14380531, 19609815, 43141593, 71902655, 215707965]

約数ペア:

[(1, 215707965), (3, 71902655), (5, 43141593), (11, 19609815), (15, 14380531), (33, 6536605), (37, 5829945), (55, 3921963), (89, 2423685), (111, 1943315), (165, 1307321), (185, 1165989), (267, 807895), (397, 543345), (407, 529995), (445, 484737), (555, 388663), (979, 220335), (1191, 181115), (1221, 176665), (1335, 161579), (1985, 108669), (2035, 105999), (2937, 73445), (3293, 65505), (4367, 49395), (4895, 44067), (5955, 36223), (6105, 35333), (9879, 21835), (13101, 16465), (14685, 14689)]