257291274

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{719}}^1$

素因数の和:859

約数の個数: 64

約数和(自身を含む): 562636800

約数和(自身を除く): 305345526

約数列:

[1, 2, 3, 6, 19, 38, 43, 57, 73, 86, 114, 129, 146, 219, 258, 438, 719, 817, 1387, 1438, 1634, 2157, 2451, 2774, 3139, 4161, 4314, 4902, 6278, 8322, 9417, 13661, 18834, 27322, 30917, 40983, 52487, 59641, 61834, 81966, 92751, 104974, 119282, 157461, 178923, 185502, 314922, 357846, 587423, 997253, 1174846, 1762269, 1994506, 2256941, 2991759, 3524538, 4513882, 5983518, 6770823, 13541646, 42881879, 85763758, 128645637, 257291274]

約数ペア:

[(1, 257291274), (2, 128645637), (3, 85763758), (6, 42881879), (19, 13541646), (38, 6770823), (43, 5983518), (57, 4513882), (73, 3524538), (86, 2991759), (114, 2256941), (129, 1994506), (146, 1762269), (219, 1174846), (258, 997253), (438, 587423), (719, 357846), (817, 314922), (1387, 185502), (1438, 178923), (1634, 157461), (2157, 119282), (2451, 104974), (2774, 92751), (3139, 81966), (4161, 61834), (4314, 59641), (4902, 52487), (6278, 40983), (8322, 30917), (9417, 27322), (13661, 18834)]