21110210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191911}}^1$

素因数の和:191929

約数の個数: 16

約数和(自身を含む): 41452992

約数和(自身を除く): 20342782

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191911, 383822, 959555, 1919110, 2111021, 4222042, 10555105, 21110210]

約数ペア:

[(1, 21110210), (2, 10555105), (5, 4222042), (10, 2111021), (11, 1919110), (22, 959555), (55, 383822), (110, 191911)]