21556416

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:438

約数の個数: 112

約数和(自身を含む): 66877184

約数和(自身を除く): 45320768

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 43, 48, 56, 64, 84, 86, 96, 112, 129, 168, 172, 192, 224, 258, 301, 336, 344, 373, 448, 516, 602, 672, 688, 746, 903, 1032, 1119, 1204, 1344, 1376, 1492, 1806, 2064, 2238, 2408, 2611, 2752, 2984, 3612, 4128, 4476, 4816, 5222, 5968, 7224, 7833, 8256, 8952, 9632, 10444, 11936, 14448, 15666, 16039, 17904, 19264, 20888, 23872, 28896, 31332, 32078, 35808, 41776, 48117, 57792, 62664, 64156, 71616, 83552, 96234, 112273, 125328, 128312, 167104, 192468, 224546, 250656, 256624, 336819, 384936, 449092, 501312, 513248, 673638, 769872, 898184, 1026496, 1347276, 1539744, 1796368, 2694552, 3079488, 3592736, 5389104, 7185472, 10778208, 21556416]

約数ペア:

[(1, 21556416), (2, 10778208), (3, 7185472), (4, 5389104), (6, 3592736), (7, 3079488), (8, 2694552), (12, 1796368), (14, 1539744), (16, 1347276), (21, 1026496), (24, 898184), (28, 769872), (32, 673638), (42, 513248), (43, 501312), (48, 449092), (56, 384936), (64, 336819), (84, 256624), (86, 250656), (96, 224546), (112, 192468), (129, 167104), (168, 128312), (172, 125328), (192, 112273), (224, 96234), (258, 83552), (301, 71616), (336, 64156), (344, 62664), (373, 57792), (448, 48117), (516, 41776), (602, 35808), (672, 32078), (688, 31332), (746, 28896), (903, 23872), (1032, 20888), (1119, 19264), (1204, 17904), (1344, 16039), (1376, 15666), (1492, 14448), (1806, 11936), (2064, 10444), (2238, 9632), (2408, 8952), (2611, 8256), (2752, 7833), (2984, 7224), (3612, 5968), (4128, 5222), (4476, 4816)]