20293291

素因数分解:

${\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 23341824

約数和(自身を除く): 3048533

約数列:

[1, 17, 23, 43, 71, 289, 391, 731, 989, 1207, 1633, 3053, 6647, 12427, 16813, 20519, 27761, 51901, 70219, 285821, 471937, 882317, 1193723, 20293291]

約数ペア:

[(1, 20293291), (17, 1193723), (23, 882317), (43, 471937), (71, 285821), (289, 70219), (391, 51901), (731, 27761), (989, 20519), (1207, 16813), (1633, 12427), (3053, 6647)]