20736729

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{419}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 13414311

約数列:

[1, 3, 9, 13, 27, 39, 47, 81, 117, 141, 351, 419, 423, 611, 1053, 1257, 1269, 1833, 3771, 3807, 5447, 5499, 11313, 16341, 16497, 19693, 33939, 49023, 49491, 59079, 147069, 177237, 256009, 441207, 531711, 768027, 1595133, 2304081, 6912243, 20736729]

約数ペア:

[(1, 20736729), (3, 6912243), (9, 2304081), (13, 1595133), (27, 768027), (39, 531711), (47, 441207), (81, 256009), (117, 177237), (141, 147069), (351, 59079), (419, 49491), (423, 49023), (611, 33939), (1053, 19693), (1257, 16497), (1269, 16341), (1833, 11313), (3771, 5499), (3807, 5447)]