21581538

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{326993}}^1$

素因数の和:327009

約数の個数: 16

約数和(自身を含む): 47087136

約数和(自身を除く): 25505598

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 326993, 653986, 980979, 1961958, 3596923, 7193846, 10790769, 21581538]

約数ペア:

[(1, 21581538), (2, 10790769), (3, 7193846), (6, 3596923), (11, 1961958), (22, 980979), (33, 653986), (66, 326993)]