21977889

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 33598080

約数和(自身を除く): 11620191

約数列:

[1, 3, 17, 19, 37, 51, 57, 111, 323, 613, 629, 703, 969, 1839, 1887, 2109, 10421, 11647, 11951, 22681, 31263, 34941, 35853, 68043, 197999, 385577, 430939, 593997, 1156731, 1292817, 7325963, 21977889]

約数ペア:

[(1, 21977889), (3, 7325963), (17, 1292817), (19, 1156731), (37, 593997), (51, 430939), (57, 385577), (111, 197999), (323, 68043), (613, 35853), (629, 34941), (703, 31263), (969, 22681), (1839, 11951), (1887, 11647), (2109, 10421)]