21495111

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{15887}}^1$

素因数の和:15942

約数の個数: 16

約数和(自身を含む): 32030208

約数和(自身を除く): 10535097

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 15887, 47661, 174757, 524271, 651367, 1954101, 7165037, 21495111]

約数ペア:

[(1, 21495111), (3, 7165037), (11, 1954101), (33, 651367), (41, 524271), (123, 174757), (451, 47661), (1353, 15887)]