19958315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 26542320

約数和(自身を除く): 6584005

約数列:

[1, 5, 13, 47, 65, 139, 235, 611, 695, 1807, 2209, 3055, 6533, 9035, 11045, 28717, 32665, 84929, 143585, 307051, 424645, 1535255, 3991663, 19958315]

約数ペア:

[(1, 19958315), (5, 3991663), (13, 1535255), (47, 424645), (65, 307051), (139, 143585), (235, 84929), (611, 32665), (695, 28717), (1807, 11045), (2209, 9035), (3055, 6533)]