21897110

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30841}}^1$

素因数の和:30919

約数の個数: 16

約数和(自身を含む): 39971232

約数和(自身を除く): 18074122

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 30841, 61682, 154205, 308410, 2189711, 4379422, 10948555, 21897110]

約数ペア:

[(1, 21897110), (2, 10948555), (5, 4379422), (10, 2189711), (71, 308410), (142, 154205), (355, 61682), (710, 30841)]