21278763

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{3643}}^1$

素因数の和:3719

約数の個数: 24

約数和(自身を含む): 34107840

約数和(自身を除く): 12829077

約数列:

[1, 3, 9, 11, 33, 59, 99, 177, 531, 649, 1947, 3643, 5841, 10929, 32787, 40073, 120219, 214937, 360657, 644811, 1934433, 2364307, 7092921, 21278763]

約数ペア:

[(1, 21278763), (3, 7092921), (9, 2364307), (11, 1934433), (33, 644811), (59, 360657), (99, 214937), (177, 120219), (531, 40073), (649, 32787), (1947, 10929), (3643, 5841)]