21272128

素因数分解:

$2^6\times {\mathrm{509}}^1\times {\mathrm{653}}^1$

素因数の和:1174

約数の個数: 28

約数和(自身を含む): 42359580

約数和(自身を除く): 21087452

約数列:

[1, 2, 4, 8, 16, 32, 64, 509, 653, 1018, 1306, 2036, 2612, 4072, 5224, 8144, 10448, 16288, 20896, 32576, 41792, 332377, 664754, 1329508, 2659016, 5318032, 10636064, 21272128]

約数ペア:

[(1, 21272128), (2, 10636064), (4, 5318032), (8, 2659016), (16, 1329508), (32, 664754), (64, 332377), (509, 41792), (653, 32576), (1018, 20896), (1306, 16288), (2036, 10448), (2612, 8144), (4072, 5224)]