781761537

素因数分解:

$3^4\times {\mathrm{1901}}^1\times {\mathrm{5077}}^1$

素因数の和:6990

約数の個数: 20

約数和(自身を含む): 1168661076

約数和(自身を除く): 386899539

約数列:

[1, 3, 9, 27, 81, 1901, 5077, 5703, 15231, 17109, 45693, 51327, 137079, 153981, 411237, 9651377, 28954131, 86862393, 260587179, 781761537]

約数ペア:

[(1, 781761537), (3, 260587179), (9, 86862393), (27, 28954131), (81, 9651377), (1901, 411237), (5077, 153981), (5703, 137079), (15231, 51327), (17109, 45693)]