51191320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 122220000

約数和(自身を除く): 71028680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 193, 349, 380, 386, 698, 760, 772, 965, 1396, 1544, 1745, 1930, 2792, 3490, 3667, 3860, 6631, 6980, 7334, 7720, 13262, 13960, 14668, 18335, 26524, 29336, 33155, 36670, 53048, 66310, 67357, 73340, 132620, 134714, 146680, 265240, 269428, 336785, 538856, 673570, 1279783, 1347140, 2559566, 2694280, 5119132, 6398915, 10238264, 12797830, 25595660, 51191320]

約数ペア:

[(1, 51191320), (2, 25595660), (4, 12797830), (5, 10238264), (8, 6398915), (10, 5119132), (19, 2694280), (20, 2559566), (38, 1347140), (40, 1279783), (76, 673570), (95, 538856), (152, 336785), (190, 269428), (193, 265240), (349, 146680), (380, 134714), (386, 132620), (698, 73340), (760, 67357), (772, 66310), (965, 53048), (1396, 36670), (1544, 33155), (1745, 29336), (1930, 26524), (2792, 18335), (3490, 14668), (3667, 13960), (3860, 13262), (6631, 7720), (6980, 7334)]