21018844

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9749}}^1$

素因数の和:9778

約数の個数: 36

約数和(自身を含む): 46683000

約数和(自身を除く): 25664156

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9749, 19498, 38996, 68243, 107239, 136486, 214478, 272972, 428956, 477701, 750673, 955402, 1501346, 1910804, 3002692, 5254711, 10509422, 21018844]

約数ペア:

[(1, 21018844), (2, 10509422), (4, 5254711), (7, 3002692), (11, 1910804), (14, 1501346), (22, 955402), (28, 750673), (44, 477701), (49, 428956), (77, 272972), (98, 214478), (154, 136486), (196, 107239), (308, 68243), (539, 38996), (1078, 19498), (2156, 9749)]