21538899

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{19457}}^1$

素因数の和:19507

約数の個数: 16

約数和(自身を含む): 32689440

約数和(自身を除く): 11150541

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 19457, 58371, 175113, 525339, 797737, 2393211, 7179633, 21538899]

約数ペア:

[(1, 21538899), (3, 7179633), (9, 2393211), (27, 797737), (41, 525339), (123, 175113), (369, 58371), (1107, 19457)]