13280905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 18662400

約数和(自身を除く): 5381495

約数列:

[1, 5, 11, 19, 55, 71, 95, 179, 209, 355, 781, 895, 1045, 1349, 1969, 3401, 3905, 6745, 9845, 12709, 14839, 17005, 37411, 63545, 74195, 139799, 187055, 241471, 698995, 1207355, 2656181, 13280905]

約数ペア:

[(1, 13280905), (5, 2656181), (11, 1207355), (19, 698995), (55, 241471), (71, 187055), (95, 139799), (179, 74195), (209, 63545), (355, 37411), (781, 17005), (895, 14839), (1045, 12709), (1349, 9845), (1969, 6745), (3401, 3905)]