21066877

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^2$

素因数の和:185

約数の個数: 18

約数和(自身を含む): 24307038

約数和(自身を除く): 3240161

約数列:

[1, 13, 19, 67, 247, 361, 871, 1273, 4489, 4693, 16549, 24187, 58357, 85291, 314431, 1108783, 1620529, 21066877]

約数ペア:

[(1, 21066877), (13, 1620529), (19, 1108783), (67, 314431), (247, 85291), (361, 58357), (871, 24187), (1273, 16549), (4489, 4693)]