19721133

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:569

約数の個数: 24

約数和(自身を含む): 29446560

約数和(自身を除く): 9725427

約数列:

[1, 3, 9, 43, 129, 131, 387, 389, 393, 1167, 1179, 3501, 5633, 16727, 16899, 50181, 50697, 50959, 150543, 152877, 458631, 2191237, 6573711, 19721133]

約数ペア:

[(1, 19721133), (3, 6573711), (9, 2191237), (43, 458631), (129, 152877), (131, 150543), (387, 50959), (389, 50697), (393, 50181), (1167, 16899), (1179, 16727), (3501, 5633)]