21028266

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1063}}^1$

素因数の和:1235

約数の個数: 48

約数和(自身を含む): 52450944

約数和(自身を除く): 31422678

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 157, 314, 471, 942, 1063, 1099, 1413, 2126, 2198, 2826, 3189, 3297, 6378, 6594, 7441, 9567, 9891, 14882, 19134, 19782, 22323, 44646, 66969, 133938, 166891, 333782, 500673, 1001346, 1168237, 1502019, 2336474, 3004038, 3504711, 7009422, 10514133, 21028266]

約数ペア:

[(1, 21028266), (2, 10514133), (3, 7009422), (6, 3504711), (7, 3004038), (9, 2336474), (14, 1502019), (18, 1168237), (21, 1001346), (42, 500673), (63, 333782), (126, 166891), (157, 133938), (314, 66969), (471, 44646), (942, 22323), (1063, 19782), (1099, 19134), (1413, 14882), (2126, 9891), (2198, 9567), (2826, 7441), (3189, 6594), (3297, 6378)]