209225315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{74857}}^1$

素因数の和:74918

約数の個数: 16

約数和(自身を含む): 276675168

約数和(自身を除く): 67449853

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 74857, 374285, 973141, 3218851, 4865705, 16094255, 41845063, 209225315]

約数ペア:

[(1, 209225315), (5, 41845063), (13, 16094255), (43, 4865705), (65, 3218851), (215, 973141), (559, 374285), (2795, 74857)]