20999307

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{32257}}^1$

素因数の和:32298

約数の個数: 16

約数和(自身を含む): 33032192

約数和(自身を除く): 12032885

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 32257, 96771, 225799, 677397, 999967, 2999901, 6999769, 20999307]

約数ペア:

[(1, 20999307), (3, 6999769), (7, 2999901), (21, 999967), (31, 677397), (93, 225799), (217, 96771), (651, 32257)]