81910640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1367}}^1$

素因数の和:1494

約数の個数: 80

約数和(自身を含む): 219843072

約数和(自身を除く): 137932432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 107, 112, 140, 214, 280, 428, 535, 560, 749, 856, 1070, 1367, 1498, 1712, 2140, 2734, 2996, 3745, 4280, 5468, 5992, 6835, 7490, 8560, 9569, 10936, 11984, 13670, 14980, 19138, 21872, 27340, 29960, 38276, 47845, 54680, 59920, 76552, 95690, 109360, 146269, 153104, 191380, 292538, 382760, 585076, 731345, 765520, 1023883, 1170152, 1462690, 2047766, 2340304, 2925380, 4095532, 5119415, 5850760, 8191064, 10238830, 11701520, 16382128, 20477660, 40955320, 81910640]

約数ペア:

[(1, 81910640), (2, 40955320), (4, 20477660), (5, 16382128), (7, 11701520), (8, 10238830), (10, 8191064), (14, 5850760), (16, 5119415), (20, 4095532), (28, 2925380), (35, 2340304), (40, 2047766), (56, 1462690), (70, 1170152), (80, 1023883), (107, 765520), (112, 731345), (140, 585076), (214, 382760), (280, 292538), (428, 191380), (535, 153104), (560, 146269), (749, 109360), (856, 95690), (1070, 76552), (1367, 59920), (1498, 54680), (1712, 47845), (2140, 38276), (2734, 29960), (2996, 27340), (3745, 21872), (4280, 19138), (5468, 14980), (5992, 13670), (6835, 11984), (7490, 10936), (8560, 9569)]