21781186281

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{131837}}^1$

素因数の和:132086

約数の個数: 32

約数和(自身を含む): 33539587200

約数和(自身を除く): 11758400919

約数列:

[1, 3, 9, 27, 29, 87, 211, 261, 633, 783, 1899, 5697, 6119, 18357, 55071, 131837, 165213, 395511, 1186533, 3559599, 3823273, 11469819, 27817607, 34409457, 83452821, 103228371, 250358463, 751075389, 806710603, 2420131809, 7260395427, 21781186281]

約数ペア:

[(1, 21781186281), (3, 7260395427), (9, 2420131809), (27, 806710603), (29, 751075389), (87, 250358463), (211, 103228371), (261, 83452821), (633, 34409457), (783, 27817607), (1899, 11469819), (5697, 3823273), (6119, 3559599), (18357, 1186533), (55071, 395511), (131837, 165213)]