21243648

素因数分解:

$2^8\times 3^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 57232000

約数和(自身を除く): 35988352

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 139, 192, 199, 256, 278, 384, 398, 417, 556, 597, 768, 796, 834, 1112, 1194, 1592, 1668, 2224, 2388, 3184, 3336, 4448, 4776, 6368, 6672, 8896, 9552, 12736, 13344, 17792, 19104, 25472, 26688, 27661, 35584, 38208, 50944, 53376, 55322, 76416, 82983, 106752, 110644, 152832, 165966, 221288, 331932, 442576, 663864, 885152, 1327728, 1770304, 2655456, 3540608, 5310912, 7081216, 10621824, 21243648]

約数ペア:

[(1, 21243648), (2, 10621824), (3, 7081216), (4, 5310912), (6, 3540608), (8, 2655456), (12, 1770304), (16, 1327728), (24, 885152), (32, 663864), (48, 442576), (64, 331932), (96, 221288), (128, 165966), (139, 152832), (192, 110644), (199, 106752), (256, 82983), (278, 76416), (384, 55322), (398, 53376), (417, 50944), (556, 38208), (597, 35584), (768, 27661), (796, 26688), (834, 25472), (1112, 19104), (1194, 17792), (1592, 13344), (1668, 12736), (2224, 9552), (2388, 8896), (3184, 6672), (3336, 6368), (4448, 4776)]