13209985

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 16381440

約数和(自身を除く): 3171455

約数列:

[1, 5, 53, 79, 265, 395, 631, 3155, 4187, 20935, 33443, 49849, 167215, 249245, 2641997, 13209985]

約数ペア:

[(1, 13209985), (5, 2641997), (53, 249245), (79, 167215), (265, 49849), (395, 33443), (631, 20935), (3155, 4187)]