20996304

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 120

約数和(自身を含む): 64460160

約数和(自身を除く): 43463856

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 49, 56, 79, 84, 98, 112, 113, 147, 158, 168, 196, 226, 237, 294, 316, 336, 339, 392, 452, 474, 553, 588, 632, 678, 784, 791, 904, 948, 1106, 1176, 1264, 1356, 1582, 1659, 1808, 1896, 2212, 2352, 2373, 2712, 3164, 3318, 3792, 3871, 4424, 4746, 5424, 5537, 6328, 6636, 7742, 8848, 8927, 9492, 11074, 11613, 12656, 13272, 15484, 16611, 17854, 18984, 22148, 23226, 26544, 26781, 30968, 33222, 35708, 37968, 44296, 46452, 53562, 61936, 62489, 66444, 71416, 88592, 92904, 107124, 124978, 132888, 142832, 185808, 187467, 214248, 249956, 265776, 374934, 428496, 437423, 499912, 749868, 874846, 999824, 1312269, 1499736, 1749692, 2624538, 2999472, 3499384, 5249076, 6998768, 10498152, 20996304]

約数ペア:

[(1, 20996304), (2, 10498152), (3, 6998768), (4, 5249076), (6, 3499384), (7, 2999472), (8, 2624538), (12, 1749692), (14, 1499736), (16, 1312269), (21, 999824), (24, 874846), (28, 749868), (42, 499912), (48, 437423), (49, 428496), (56, 374934), (79, 265776), (84, 249956), (98, 214248), (112, 187467), (113, 185808), (147, 142832), (158, 132888), (168, 124978), (196, 107124), (226, 92904), (237, 88592), (294, 71416), (316, 66444), (336, 62489), (339, 61936), (392, 53562), (452, 46452), (474, 44296), (553, 37968), (588, 35708), (632, 33222), (678, 30968), (784, 26781), (791, 26544), (904, 23226), (948, 22148), (1106, 18984), (1176, 17854), (1264, 16611), (1356, 15484), (1582, 13272), (1659, 12656), (1808, 11613), (1896, 11074), (2212, 9492), (2352, 8927), (2373, 8848), (2712, 7742), (3164, 6636), (3318, 6328), (3792, 5537), (3871, 5424), (4424, 4746)]