257059760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{271}}^1$

素因数の和:522

約数の個数: 80

約数和(自身を含む): 611960832

約数和(自身を除く): 354901072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 167, 271, 284, 334, 355, 542, 568, 668, 710, 835, 1084, 1136, 1336, 1355, 1420, 1670, 2168, 2672, 2710, 2840, 3340, 4336, 5420, 5680, 6680, 10840, 11857, 13360, 19241, 21680, 23714, 38482, 45257, 47428, 59285, 76964, 90514, 94856, 96205, 118570, 153928, 181028, 189712, 192410, 226285, 237140, 307856, 362056, 384820, 452570, 474280, 724112, 769640, 905140, 948560, 1539280, 1810280, 3213247, 3620560, 6426494, 12852988, 16066235, 25705976, 32132470, 51411952, 64264940, 128529880, 257059760]

約数ペア:

[(1, 257059760), (2, 128529880), (4, 64264940), (5, 51411952), (8, 32132470), (10, 25705976), (16, 16066235), (20, 12852988), (40, 6426494), (71, 3620560), (80, 3213247), (142, 1810280), (167, 1539280), (271, 948560), (284, 905140), (334, 769640), (355, 724112), (542, 474280), (568, 452570), (668, 384820), (710, 362056), (835, 307856), (1084, 237140), (1136, 226285), (1336, 192410), (1355, 189712), (1420, 181028), (1670, 153928), (2168, 118570), (2672, 96205), (2710, 94856), (2840, 90514), (3340, 76964), (4336, 59285), (5420, 47428), (5680, 45257), (6680, 38482), (10840, 23714), (11857, 21680), (13360, 19241)]