20520445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{1291}}^1$

素因数の和:1341

約数の個数: 24

約数和(自身を含む): 28558368

約数和(自身を除く): 8037923

約数列:

[1, 5, 11, 17, 55, 85, 187, 289, 935, 1291, 1445, 3179, 6455, 14201, 15895, 21947, 71005, 109735, 241417, 373099, 1207085, 1865495, 4104089, 20520445]

約数ペア:

[(1, 20520445), (5, 4104089), (11, 1865495), (17, 1207085), (55, 373099), (85, 241417), (187, 109735), (289, 71005), (935, 21947), (1291, 15895), (1445, 14201), (3179, 6455)]