18827991

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 35123200

約数和(自身を除く): 16295209

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 79, 91, 97, 117, 189, 237, 273, 291, 351, 553, 679, 711, 819, 873, 1027, 1261, 1659, 2037, 2133, 2457, 2619, 3081, 3783, 4977, 6111, 7189, 7663, 8827, 9243, 11349, 14931, 18333, 21567, 22989, 26481, 27729, 34047, 53641, 64701, 68967, 79443, 99619, 160923, 194103, 206901, 238329, 298857, 482769, 697333, 896571, 1448307, 2091999, 2689713, 6275997, 18827991]

約数ペア:

[(1, 18827991), (3, 6275997), (7, 2689713), (9, 2091999), (13, 1448307), (21, 896571), (27, 697333), (39, 482769), (63, 298857), (79, 238329), (91, 206901), (97, 194103), (117, 160923), (189, 99619), (237, 79443), (273, 68967), (291, 64701), (351, 53641), (553, 34047), (679, 27729), (711, 26481), (819, 22989), (873, 21567), (1027, 18333), (1261, 14931), (1659, 11349), (2037, 9243), (2133, 8827), (2457, 7663), (2619, 7189), (3081, 6111), (3783, 4977)]