21058251

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2909}}^1$

素因数の和:3058

約数の個数: 16

約数和(自身を含む): 29798400

約数和(自身を除く): 8740149

約数列:

[1, 3, 19, 57, 127, 381, 2413, 2909, 7239, 8727, 55271, 165813, 369443, 1108329, 7019417, 21058251]

約数ペア:

[(1, 21058251), (3, 7019417), (19, 1108329), (57, 369443), (127, 165813), (381, 55271), (2413, 8727), (2909, 7239)]