21998570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{881}}^1$

素因数の和:1126

約数の個数: 32

約数和(自身を含む): 43436736

約数和(自身を除く): 21438166

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 227, 454, 881, 1135, 1762, 2270, 2497, 4405, 4994, 8810, 9691, 12485, 19382, 24970, 48455, 96910, 199987, 399974, 999935, 1999870, 2199857, 4399714, 10999285, 21998570]

約数ペア:

[(1, 21998570), (2, 10999285), (5, 4399714), (10, 2199857), (11, 1999870), (22, 999935), (55, 399974), (110, 199987), (227, 96910), (454, 48455), (881, 24970), (1135, 19382), (1762, 12485), (2270, 9691), (2497, 8810), (4405, 4994)]