18997839

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1873}}^1$

素因数の和:1916

約数の個数: 36

約数和(自身を含む): 33327216

約数和(自身を除く): 14329377

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 1873, 3381, 5619, 10143, 13111, 16857, 39333, 43079, 91777, 117999, 129237, 275331, 301553, 387711, 825993, 904659, 2110871, 2713977, 6332613, 18997839]

約数ペア:

[(1, 18997839), (3, 6332613), (7, 2713977), (9, 2110871), (21, 904659), (23, 825993), (49, 387711), (63, 301553), (69, 275331), (147, 129237), (161, 117999), (207, 91777), (441, 43079), (483, 39333), (1127, 16857), (1449, 13111), (1873, 10143), (3381, 5619)]