21534681

素因数分解:

$3^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1303}}^1$

素因数の和:2100

約数の個数: 16

約数和(自身を含む): 32881664

約数和(自身を除く): 11346983

約数列:

[1, 3, 7, 21, 787, 1303, 2361, 3909, 5509, 9121, 16527, 27363, 1025461, 3076383, 7178227, 21534681]

約数ペア:

[(1, 21534681), (3, 7178227), (7, 3076383), (21, 1025461), (787, 27363), (1303, 16527), (2361, 9121), (3909, 5509)]