18859960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 48888000

約数和(自身を除く): 30028040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 349, 386, 698, 772, 965, 1351, 1396, 1544, 1745, 1930, 2443, 2702, 2792, 3490, 3860, 4886, 5404, 6755, 6980, 7720, 9772, 10808, 12215, 13510, 13960, 19544, 24430, 27020, 48860, 54040, 67357, 97720, 134714, 269428, 336785, 471499, 538856, 673570, 942998, 1347140, 1885996, 2357495, 2694280, 3771992, 4714990, 9429980, 18859960]

約数ペア:

[(1, 18859960), (2, 9429980), (4, 4714990), (5, 3771992), (7, 2694280), (8, 2357495), (10, 1885996), (14, 1347140), (20, 942998), (28, 673570), (35, 538856), (40, 471499), (56, 336785), (70, 269428), (140, 134714), (193, 97720), (280, 67357), (349, 54040), (386, 48860), (698, 27020), (772, 24430), (965, 19544), (1351, 13960), (1396, 13510), (1544, 12215), (1745, 10808), (1930, 9772), (2443, 7720), (2702, 6980), (2792, 6755), (3490, 5404), (3860, 4886)]