21904377

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{9907}}^1$

素因数の和:9988

約数の個数: 16

約数和(自身を含む): 32339712

約数和(自身を除く): 10435335

約数列:

[1, 3, 11, 33, 67, 201, 737, 2211, 9907, 29721, 108977, 326931, 663769, 1991307, 7301459, 21904377]

約数ペア:

[(1, 21904377), (3, 7301459), (11, 1991307), (33, 663769), (67, 326931), (201, 108977), (737, 29721), (2211, 9907)]