21399290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{857}}^1$

素因数の和:1102

約数の個数: 32

約数和(自身を含む): 42254784

約数和(自身を除く): 20855494

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 227, 454, 857, 1135, 1714, 2270, 2497, 4285, 4994, 8570, 9427, 12485, 18854, 24970, 47135, 94270, 194539, 389078, 972695, 1945390, 2139929, 4279858, 10699645, 21399290]

約数ペア:

[(1, 21399290), (2, 10699645), (5, 4279858), (10, 2139929), (11, 1945390), (22, 972695), (55, 389078), (110, 194539), (227, 94270), (454, 47135), (857, 24970), (1135, 18854), (1714, 12485), (2270, 9427), (2497, 8570), (4285, 4994)]