21709072

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 53425152

約数和(自身を除く): 31716080

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 67, 77, 88, 112, 134, 154, 176, 263, 268, 308, 469, 526, 536, 616, 737, 938, 1052, 1072, 1232, 1474, 1841, 1876, 2104, 2893, 2948, 3682, 3752, 4208, 5159, 5786, 5896, 7364, 7504, 10318, 11572, 11792, 14728, 17621, 20251, 20636, 23144, 29456, 35242, 40502, 41272, 46288, 70484, 81004, 82544, 123347, 140968, 162008, 193831, 246694, 281936, 324016, 387662, 493388, 775324, 986776, 1356817, 1550648, 1973552, 2713634, 3101296, 5427268, 10854536, 21709072]

約数ペア:

[(1, 21709072), (2, 10854536), (4, 5427268), (7, 3101296), (8, 2713634), (11, 1973552), (14, 1550648), (16, 1356817), (22, 986776), (28, 775324), (44, 493388), (56, 387662), (67, 324016), (77, 281936), (88, 246694), (112, 193831), (134, 162008), (154, 140968), (176, 123347), (263, 82544), (268, 81004), (308, 70484), (469, 46288), (526, 41272), (536, 40502), (616, 35242), (737, 29456), (938, 23144), (1052, 20636), (1072, 20251), (1232, 17621), (1474, 14728), (1841, 11792), (1876, 11572), (2104, 10318), (2893, 7504), (2948, 7364), (3682, 5896), (3752, 5786), (4208, 5159)]