21158090

素因数分解:

$2^1\times 5^1\times {\mathrm{971}}^1\times {\mathrm{2179}}^1$

素因数の和:3157

約数の個数: 16

約数和(自身を含む): 38141280

約数和(自身を除く): 16983190

約数列:

[1, 2, 5, 10, 971, 1942, 2179, 4358, 4855, 9710, 10895, 21790, 2115809, 4231618, 10579045, 21158090]

約数ペア:

[(1, 21158090), (2, 10579045), (5, 4231618), (10, 2115809), (971, 21790), (1942, 10895), (2179, 9710), (4358, 4855)]