13205515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3613}}^1$

素因数の和:3678

約数の個数: 16

約数和(自身を含む): 17173728

約数和(自身を除く): 3968213

約数列:

[1, 5, 17, 43, 85, 215, 731, 3613, 3655, 18065, 61421, 155359, 307105, 776795, 2641103, 13205515]

約数ペア:

[(1, 13205515), (5, 2641103), (17, 776795), (43, 307105), (85, 155359), (215, 61421), (731, 18065), (3613, 3655)]