261567488

素因数分解:

$2^{10}\times 7^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:448

約数の個数: 132

約数和(自身を含む): 656669412

約数和(自身を除く): 395101924

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 128, 182, 196, 208, 224, 256, 364, 392, 401, 416, 448, 512, 637, 728, 784, 802, 832, 896, 1024, 1274, 1456, 1568, 1604, 1664, 1792, 2548, 2807, 2912, 3136, 3208, 3328, 3584, 5096, 5213, 5614, 5824, 6272, 6416, 6656, 7168, 10192, 10426, 11228, 11648, 12544, 12832, 13312, 19649, 20384, 20852, 22456, 23296, 25088, 25664, 36491, 39298, 40768, 41704, 44912, 46592, 50176, 51328, 72982, 78596, 81536, 83408, 89824, 93184, 102656, 145964, 157192, 163072, 166816, 179648, 205312, 255437, 291928, 314384, 326144, 333632, 359296, 410624, 510874, 583856, 628768, 652288, 667264, 718592, 1021748, 1167712, 1257536, 1334528, 1437184, 2043496, 2335424, 2515072, 2669056, 2874368, 4086992, 4670848, 5030144, 5338112, 8173984, 9341696, 10060288, 16347968, 18683392, 20120576, 32695936, 37366784, 65391872, 130783744, 261567488]

約数ペア:

[(1, 261567488), (2, 130783744), (4, 65391872), (7, 37366784), (8, 32695936), (13, 20120576), (14, 18683392), (16, 16347968), (26, 10060288), (28, 9341696), (32, 8173984), (49, 5338112), (52, 5030144), (56, 4670848), (64, 4086992), (91, 2874368), (98, 2669056), (104, 2515072), (112, 2335424), (128, 2043496), (182, 1437184), (196, 1334528), (208, 1257536), (224, 1167712), (256, 1021748), (364, 718592), (392, 667264), (401, 652288), (416, 628768), (448, 583856), (512, 510874), (637, 410624), (728, 359296), (784, 333632), (802, 326144), (832, 314384), (896, 291928), (1024, 255437), (1274, 205312), (1456, 179648), (1568, 166816), (1604, 163072), (1664, 157192), (1792, 145964), (2548, 102656), (2807, 93184), (2912, 89824), (3136, 83408), (3208, 81536), (3328, 78596), (3584, 72982), (5096, 51328), (5213, 50176), (5614, 46592), (5824, 44912), (6272, 41704), (6416, 40768), (6656, 39298), (7168, 36491), (10192, 25664), (10426, 25088), (11228, 23296), (11648, 22456), (12544, 20852), (12832, 20384), (13312, 19649)]