20658575

素因数分解:

$5^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1217}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 29602272

約数和(自身を除く): 8943697

約数列:

[1, 5, 7, 25, 35, 97, 175, 485, 679, 1217, 2425, 3395, 6085, 8519, 16975, 30425, 42595, 118049, 212975, 590245, 826343, 2951225, 4131715, 20658575]

約数ペア:

[(1, 20658575), (5, 4131715), (7, 2951225), (25, 826343), (35, 590245), (97, 212975), (175, 118049), (485, 42595), (679, 30425), (1217, 16975), (2425, 8519), (3395, 6085)]