13420775

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{7561}}^1$

素因数の和:7642

約数の個数: 12

約数和(自身を含む): 16878384

約数和(自身を除く): 3457609

約数列:

[1, 5, 25, 71, 355, 1775, 7561, 37805, 189025, 536831, 2684155, 13420775]

約数ペア:

[(1, 13420775), (5, 2684155), (25, 536831), (71, 189025), (355, 37805), (1775, 7561)]