256521551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{8117}}^1$

素因数の和:8171

約数の個数: 24

約数和(自身を含む): 320888304

約数和(自身を除く): 64366753

約数列:

[1, 11, 13, 17, 143, 169, 187, 221, 1859, 2431, 2873, 8117, 31603, 89287, 105521, 137989, 1160731, 1371773, 1517879, 1793857, 15089503, 19732427, 23320141, 256521551]

約数ペア:

[(1, 256521551), (11, 23320141), (13, 19732427), (17, 15089503), (143, 1793857), (169, 1517879), (187, 1371773), (221, 1160731), (1859, 137989), (2431, 105521), (2873, 89287), (8117, 31603)]