128279920

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:482

約数の個数: 80

約数和(自身を含む): 308373120

約数和(自身を除く): 180093200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 109, 188, 218, 235, 313, 376, 436, 470, 545, 626, 752, 872, 940, 1090, 1252, 1565, 1744, 1880, 2180, 2504, 3130, 3760, 4360, 5008, 5123, 6260, 8720, 10246, 12520, 14711, 20492, 25040, 25615, 29422, 34117, 40984, 51230, 58844, 68234, 73555, 81968, 102460, 117688, 136468, 147110, 170585, 204920, 235376, 272936, 294220, 341170, 409840, 545872, 588440, 682340, 1176880, 1364680, 1603499, 2729360, 3206998, 6413996, 8017495, 12827992, 16034990, 25655984, 32069980, 64139960, 128279920]

約数ペア:

[(1, 128279920), (2, 64139960), (4, 32069980), (5, 25655984), (8, 16034990), (10, 12827992), (16, 8017495), (20, 6413996), (40, 3206998), (47, 2729360), (80, 1603499), (94, 1364680), (109, 1176880), (188, 682340), (218, 588440), (235, 545872), (313, 409840), (376, 341170), (436, 294220), (470, 272936), (545, 235376), (626, 204920), (752, 170585), (872, 147110), (940, 136468), (1090, 117688), (1252, 102460), (1565, 81968), (1744, 73555), (1880, 68234), (2180, 58844), (2504, 51230), (3130, 40984), (3760, 34117), (4360, 29422), (5008, 25615), (5123, 25040), (6260, 20492), (8720, 14711), (10246, 12520)]