21772205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 10752595

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 439, 455, 545, 763, 1417, 2195, 3073, 3815, 5707, 7085, 9919, 15365, 28535, 39949, 47851, 49595, 199745, 239255, 334957, 622063, 1674785, 3110315, 4354441, 21772205]

約数ペア:

[(1, 21772205), (5, 4354441), (7, 3110315), (13, 1674785), (35, 622063), (65, 334957), (91, 239255), (109, 199745), (439, 49595), (455, 47851), (545, 39949), (763, 28535), (1417, 15365), (2195, 9919), (3073, 7085), (3815, 5707)]