21239192

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{461}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 43076880

約数和(自身を除く): 21837688

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 443, 461, 886, 922, 1772, 1844, 3544, 3688, 5759, 5993, 11518, 11986, 23036, 23972, 46072, 47944, 204223, 408446, 816892, 1633784, 2654899, 5309798, 10619596, 21239192]

約数ペア:

[(1, 21239192), (2, 10619596), (4, 5309798), (8, 2654899), (13, 1633784), (26, 816892), (52, 408446), (104, 204223), (443, 47944), (461, 46072), (886, 23972), (922, 23036), (1772, 11986), (1844, 11518), (3544, 5993), (3688, 5759)]