21279040

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2293}}^1$

素因数の和:2339

約数の個数: 56

約数和(自身を含む): 52440840

約数和(自身を除く): 31161800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2293, 2320, 4586, 4640, 9172, 9280, 11465, 18344, 22930, 36688, 45860, 66497, 73376, 91720, 132994, 146752, 183440, 265988, 332485, 366880, 531976, 664970, 733760, 1063952, 1329940, 2127904, 2659880, 4255808, 5319760, 10639520, 21279040]

約数ペア:

[(1, 21279040), (2, 10639520), (4, 5319760), (5, 4255808), (8, 2659880), (10, 2127904), (16, 1329940), (20, 1063952), (29, 733760), (32, 664970), (40, 531976), (58, 366880), (64, 332485), (80, 265988), (116, 183440), (145, 146752), (160, 132994), (232, 91720), (290, 73376), (320, 66497), (464, 45860), (580, 36688), (928, 22930), (1160, 18344), (1856, 11465), (2293, 9280), (2320, 9172), (4586, 4640)]