261639364

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 531917568

約数和(自身を除く): 270278204

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 257, 353, 412, 514, 706, 721, 1028, 1412, 1442, 1799, 2471, 2884, 3598, 4942, 7196, 9884, 26471, 36359, 52942, 72718, 90721, 105884, 145436, 181442, 185297, 254513, 362884, 370594, 509026, 635047, 741188, 1018052, 1270094, 2540188, 9344263, 18688526, 37377052, 65409841, 130819682, 261639364]

約数ペア:

[(1, 261639364), (2, 130819682), (4, 65409841), (7, 37377052), (14, 18688526), (28, 9344263), (103, 2540188), (206, 1270094), (257, 1018052), (353, 741188), (412, 635047), (514, 509026), (706, 370594), (721, 362884), (1028, 254513), (1412, 185297), (1442, 181442), (1799, 145436), (2471, 105884), (2884, 90721), (3598, 72718), (4942, 52942), (7196, 36359), (9884, 26471)]