21000485072

素因数分解:

$2^4\times 7^3\times {\mathrm{19}}^1\times {\mathrm{201401}}^1$

素因数の和:201449

約数の個数: 80

約数和(自身を含む): 49947696000

約数和(自身を除く): 28947210928

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 266, 304, 343, 392, 532, 686, 784, 931, 1064, 1372, 1862, 2128, 2744, 3724, 5488, 6517, 7448, 13034, 14896, 26068, 52136, 104272, 201401, 402802, 805604, 1409807, 1611208, 2819614, 3222416, 3826619, 5639228, 7653238, 9868649, 11278456, 15306476, 19737298, 22556912, 26786333, 30612952, 39474596, 53572666, 61225904, 69080543, 78949192, 107145332, 138161086, 157898384, 187504331, 214290664, 276322172, 375008662, 428581328, 552644344, 750017324, 1105288688, 1312530317, 1500034648, 2625060634, 3000069296, 5250121268, 10500242536, 21000485072]

約数ペア:

[(1, 21000485072), (2, 10500242536), (4, 5250121268), (7, 3000069296), (8, 2625060634), (14, 1500034648), (16, 1312530317), (19, 1105288688), (28, 750017324), (38, 552644344), (49, 428581328), (56, 375008662), (76, 276322172), (98, 214290664), (112, 187504331), (133, 157898384), (152, 138161086), (196, 107145332), (266, 78949192), (304, 69080543), (343, 61225904), (392, 53572666), (532, 39474596), (686, 30612952), (784, 26786333), (931, 22556912), (1064, 19737298), (1372, 15306476), (1862, 11278456), (2128, 9868649), (2744, 7653238), (3724, 5639228), (5488, 3826619), (6517, 3222416), (7448, 2819614), (13034, 1611208), (14896, 1409807), (26068, 805604), (52136, 402802), (104272, 201401)]