21255609

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{1187}}^1$

素因数の和:1364

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 7940679

約数列:

[1, 3, 47, 127, 141, 381, 1187, 3561, 5969, 17907, 55789, 150749, 167367, 452247, 7085203, 21255609]

約数ペア:

[(1, 21255609), (3, 7085203), (47, 452247), (127, 167367), (141, 150749), (381, 55789), (1187, 17907), (3561, 5969)]