12800385

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21881}}^1$

素因数の和:21905

約数の個数: 24

約数和(自身を含む): 23895144

約数和(自身を除く): 11094759

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 21881, 65643, 109405, 196929, 284453, 328215, 853359, 984645, 1422265, 2560077, 4266795, 12800385]

約数ペア:

[(1, 12800385), (3, 4266795), (5, 2560077), (9, 1422265), (13, 984645), (15, 853359), (39, 328215), (45, 284453), (65, 196929), (117, 109405), (195, 65643), (585, 21881)]