19712721

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{32369}}^1$

素因数の和:32408

約数の個数: 16

約数和(自身を含む): 31075200

約数和(自身を除く): 11362479

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 32369, 97107, 226583, 679749, 938701, 2816103, 6570907, 19712721]

約数ペア:

[(1, 19712721), (3, 6570907), (7, 2816103), (21, 938701), (29, 679749), (87, 226583), (203, 97107), (609, 32369)]