13221395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 18221760

約数和(自身を除く): 5000365

約数列:

[1, 5, 11, 37, 55, 73, 89, 185, 365, 407, 445, 803, 979, 2035, 2701, 3293, 4015, 4895, 6497, 13505, 16465, 29711, 32485, 36223, 71467, 148555, 181115, 240389, 357335, 1201945, 2644279, 13221395]

約数ペア:

[(1, 13221395), (5, 2644279), (11, 1201945), (37, 357335), (55, 240389), (73, 181115), (89, 148555), (185, 71467), (365, 36223), (407, 32485), (445, 29711), (803, 16465), (979, 13505), (2035, 6497), (2701, 4895), (3293, 4015)]