256587008

素因数分解:

$2^8\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 533140608

約数和(自身を除く): 276553600

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 103, 128, 148, 206, 256, 263, 296, 412, 526, 592, 824, 1052, 1184, 1648, 2104, 2368, 3296, 3811, 4208, 4736, 6592, 7622, 8416, 9472, 9731, 13184, 15244, 16832, 19462, 26368, 27089, 30488, 33664, 38924, 54178, 60976, 67328, 77848, 108356, 121952, 155696, 216712, 243904, 311392, 433424, 487808, 622784, 866848, 975616, 1002293, 1245568, 1733696, 2004586, 2491136, 3467392, 4009172, 6934784, 8018344, 16036688, 32073376, 64146752, 128293504, 256587008]

約数ペア:

[(1, 256587008), (2, 128293504), (4, 64146752), (8, 32073376), (16, 16036688), (32, 8018344), (37, 6934784), (64, 4009172), (74, 3467392), (103, 2491136), (128, 2004586), (148, 1733696), (206, 1245568), (256, 1002293), (263, 975616), (296, 866848), (412, 622784), (526, 487808), (592, 433424), (824, 311392), (1052, 243904), (1184, 216712), (1648, 155696), (2104, 121952), (2368, 108356), (3296, 77848), (3811, 67328), (4208, 60976), (4736, 54178), (6592, 38924), (7622, 33664), (8416, 30488), (9472, 27089), (9731, 26368), (13184, 19462), (15244, 16832)]