20213397

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2749}}^1$

素因数の和:2817

約数の個数: 24

約数和(自身を含む): 31460000

約数和(自身を除く): 11246603

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2749, 7353, 8247, 24741, 52231, 118207, 156693, 354621, 470079, 1063863, 2245933, 6737799, 20213397]

約数ペア:

[(1, 20213397), (3, 6737799), (9, 2245933), (19, 1063863), (43, 470079), (57, 354621), (129, 156693), (171, 118207), (387, 52231), (817, 24741), (2451, 8247), (2749, 7353)]