19478487

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{6673}}^1$

素因数の和:6822

約数の個数: 16

約数和(自身を含む): 29899520

約数和(自身を除く): 10421033

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 6673, 20019, 46711, 140133, 927547, 2782641, 6492829, 19478487]

約数ペア:

[(1, 19478487), (3, 6492829), (7, 2782641), (21, 927547), (139, 140133), (417, 46711), (973, 20019), (2919, 6673)]