21578810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{196171}}^1$

素因数の和:196189

約数の個数: 16

約数和(自身を含む): 42373152

約数和(自身を除く): 20794342

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 196171, 392342, 980855, 1961710, 2157881, 4315762, 10789405, 21578810]

約数ペア:

[(1, 21578810), (2, 10789405), (5, 4315762), (10, 2157881), (11, 1961710), (22, 980855), (55, 392342), (110, 196171)]