20687181

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 31628160

約数和(自身を除く): 10940979

約数列:

[1, 3, 17, 19, 37, 51, 57, 111, 323, 577, 629, 703, 969, 1731, 1887, 2109, 9809, 10963, 11951, 21349, 29427, 32889, 35853, 64047, 186371, 362933, 405631, 559113, 1088799, 1216893, 6895727, 20687181]

約数ペア:

[(1, 20687181), (3, 6895727), (17, 1216893), (19, 1088799), (37, 559113), (51, 405631), (57, 362933), (111, 186371), (323, 64047), (577, 35853), (629, 32889), (703, 29427), (969, 21349), (1731, 11951), (1887, 10963), (2109, 9809)]