18558585

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 16923015

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 115, 129, 135, 139, 207, 215, 345, 387, 417, 621, 645, 695, 989, 1035, 1161, 1251, 1935, 2085, 2967, 3105, 3197, 3753, 4945, 5805, 5977, 6255, 8901, 9591, 14835, 15985, 17931, 18765, 26703, 28773, 29885, 44505, 47955, 53793, 86319, 89655, 133515, 137471, 143865, 161379, 268965, 412413, 431595, 687355, 806895, 1237239, 2062065, 3711717, 6186195, 18558585]

約数ペア:

[(1, 18558585), (3, 6186195), (5, 3711717), (9, 2062065), (15, 1237239), (23, 806895), (27, 687355), (43, 431595), (45, 412413), (69, 268965), (115, 161379), (129, 143865), (135, 137471), (139, 133515), (207, 89655), (215, 86319), (345, 53793), (387, 47955), (417, 44505), (621, 29885), (645, 28773), (695, 26703), (989, 18765), (1035, 17931), (1161, 15985), (1251, 14835), (1935, 9591), (2085, 8901), (2967, 6255), (3105, 5977), (3197, 5805), (3753, 4945)]