18920702979

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{108967}}^1$

素因数の和:109144

約数の個数: 32

約数和(自身を含む): 28767552000

約数和(自身を除く): 9846849021

約数列:

[1, 3, 9, 27, 59, 109, 177, 327, 531, 981, 1593, 2943, 6431, 19293, 57879, 108967, 173637, 326901, 980703, 2942109, 6429053, 11877403, 19287159, 35632209, 57861477, 106896627, 173584431, 320689881, 700766777, 2102300331, 6306900993, 18920702979]

約数ペア:

[(1, 18920702979), (3, 6306900993), (9, 2102300331), (27, 700766777), (59, 320689881), (109, 173584431), (177, 106896627), (327, 57861477), (531, 35632209), (981, 19287159), (1593, 11877403), (2943, 6429053), (6431, 2942109), (19293, 980703), (57879, 326901), (108967, 173637)]