21788095

素因数分解:

$5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{787}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 30722544

約数和(自身を除く): 8934449

約数列:

[1, 5, 7, 35, 49, 113, 245, 565, 787, 791, 3935, 3955, 5509, 5537, 27545, 27685, 38563, 88931, 192815, 444655, 622517, 3112585, 4357619, 21788095]

約数ペア:

[(1, 21788095), (5, 4357619), (7, 3112585), (35, 622517), (49, 444655), (113, 192815), (245, 88931), (565, 38563), (787, 27685), (791, 27545), (3935, 5537), (3955, 5509)]