21086710

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51431}}^1$

素因数の和:51479

約数の個数: 16

約数和(自身を含む): 38882592

約数和(自身を除く): 17795882

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51431, 102862, 257155, 514310, 2108671, 4217342, 10543355, 21086710]

約数ペア:

[(1, 21086710), (2, 10543355), (5, 4217342), (10, 2108671), (41, 514310), (82, 257155), (205, 102862), (410, 51431)]