21200223

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10975137

約数列:

[1, 3, 11, 33, 37, 97, 111, 179, 291, 407, 537, 1067, 1221, 1969, 3201, 3589, 5907, 6623, 10767, 17363, 19869, 39479, 52089, 72853, 118437, 190993, 218559, 572979, 642431, 1927293, 7066741, 21200223]

約数ペア:

[(1, 21200223), (3, 7066741), (11, 1927293), (33, 642431), (37, 572979), (97, 218559), (111, 190993), (179, 118437), (291, 72853), (407, 52089), (537, 39479), (1067, 19869), (1221, 17363), (1969, 10767), (3201, 6623), (3589, 5907)]