20121155103

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{56361779}}^1$

素因数の和:56361806

約数の個数: 16

約数和(自身を含む): 32464385280

約数和(自身を除く): 12343230177

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 56361779, 169085337, 394532453, 958150243, 1183597359, 2874450729, 6707051701, 20121155103]

約数ペア:

[(1, 20121155103), (3, 6707051701), (7, 2874450729), (17, 1183597359), (21, 958150243), (51, 394532453), (119, 169085337), (357, 56361779)]