21680928

素因数分解:

$2^5\times 3^2\times {\mathrm{83}}^1\times {\mathrm{907}}^1$

素因数の和:1006

約数の個数: 72

約数和(自身を含む): 62466768

約数和(自身を除く): 40785840

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 83, 96, 144, 166, 249, 288, 332, 498, 664, 747, 907, 996, 1328, 1494, 1814, 1992, 2656, 2721, 2988, 3628, 3984, 5442, 5976, 7256, 7968, 8163, 10884, 11952, 14512, 16326, 21768, 23904, 29024, 32652, 43536, 65304, 75281, 87072, 130608, 150562, 225843, 261216, 301124, 451686, 602248, 677529, 903372, 1204496, 1355058, 1806744, 2408992, 2710116, 3613488, 5420232, 7226976, 10840464, 21680928]

約数ペア:

[(1, 21680928), (2, 10840464), (3, 7226976), (4, 5420232), (6, 3613488), (8, 2710116), (9, 2408992), (12, 1806744), (16, 1355058), (18, 1204496), (24, 903372), (32, 677529), (36, 602248), (48, 451686), (72, 301124), (83, 261216), (96, 225843), (144, 150562), (166, 130608), (249, 87072), (288, 75281), (332, 65304), (498, 43536), (664, 32652), (747, 29024), (907, 23904), (996, 21768), (1328, 16326), (1494, 14512), (1814, 11952), (1992, 10884), (2656, 8163), (2721, 7968), (2988, 7256), (3628, 5976), (3984, 5442)]