21275518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 15168002

約数列:

[1, 2, 11, 22, 37, 59, 74, 118, 407, 443, 649, 814, 886, 1298, 2183, 4366, 4873, 9746, 16391, 24013, 26137, 32782, 48026, 52274, 180301, 287507, 360602, 575014, 967069, 1934138, 10637759, 21275518]

約数ペア:

[(1, 21275518), (2, 10637759), (11, 1934138), (22, 967069), (37, 575014), (59, 360602), (74, 287507), (118, 180301), (407, 52274), (443, 48026), (649, 32782), (814, 26137), (886, 24013), (1298, 16391), (2183, 9746), (4366, 4873)]