20807090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2671}}^1$

素因数の和:2738

約数の個数: 32

約数和(自身を含む): 40400640

約数和(自身を除く): 19593550

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2671, 3895, 5342, 7790, 13355, 26710, 50749, 101498, 109511, 219022, 253745, 507490, 547555, 1095110, 2080709, 4161418, 10403545, 20807090]

約数ペア:

[(1, 20807090), (2, 10403545), (5, 4161418), (10, 2080709), (19, 1095110), (38, 547555), (41, 507490), (82, 253745), (95, 219022), (190, 109511), (205, 101498), (410, 50749), (779, 26710), (1558, 13355), (2671, 7790), (3895, 5342)]