21285561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20807}}^1$

素因数の和:20852

約数の個数: 16

約数和(自身を含む): 31961088

約数和(自身を除く): 10675527

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20807, 62421, 228877, 645017, 686631, 1935051, 7095187, 21285561]

約数ペア:

[(1, 21285561), (3, 7095187), (11, 1935051), (31, 686631), (33, 645017), (93, 228877), (341, 62421), (1023, 20807)]