18515120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{937}}^1$

素因数の和:982

約数の個数: 80

約数和(自身を含む): 48851040

約数和(自身を除く): 30335920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 937, 988, 1040, 1235, 1520, 1874, 1976, 2470, 3748, 3952, 4685, 4940, 7496, 9370, 9880, 12181, 14992, 17803, 18740, 19760, 24362, 35606, 37480, 48724, 60905, 71212, 74960, 89015, 97448, 121810, 142424, 178030, 194896, 231439, 243620, 284848, 356060, 462878, 487240, 712120, 925756, 974480, 1157195, 1424240, 1851512, 2314390, 3703024, 4628780, 9257560, 18515120]

約数ペア:

[(1, 18515120), (2, 9257560), (4, 4628780), (5, 3703024), (8, 2314390), (10, 1851512), (13, 1424240), (16, 1157195), (19, 974480), (20, 925756), (26, 712120), (38, 487240), (40, 462878), (52, 356060), (65, 284848), (76, 243620), (80, 231439), (95, 194896), (104, 178030), (130, 142424), (152, 121810), (190, 97448), (208, 89015), (247, 74960), (260, 71212), (304, 60905), (380, 48724), (494, 37480), (520, 35606), (760, 24362), (937, 19760), (988, 18740), (1040, 17803), (1235, 14992), (1520, 12181), (1874, 9880), (1976, 9370), (2470, 7496), (3748, 4940), (3952, 4685)]