21187647

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3853}}^1$

素因数の和:3919

約数の個数: 24

約数和(自身を含む): 33668544

約数和(自身を除く): 12480897

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 423, 611, 1833, 3853, 5499, 11559, 34677, 50089, 150267, 181091, 450801, 543273, 1629819, 2354183, 7062549, 21187647]

約数ペア:

[(1, 21187647), (3, 7062549), (9, 2354183), (13, 1629819), (39, 543273), (47, 450801), (117, 181091), (141, 150267), (423, 50089), (611, 34677), (1833, 11559), (3853, 5499)]