18845265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{281}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 32161536

約数和(自身を除く): 13316271

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 263, 281, 789, 843, 1315, 1405, 3945, 4215, 4471, 4777, 13413, 14331, 22355, 23885, 67065, 71655, 73903, 221709, 369515, 1108545, 1256351, 3769053, 6281755, 18845265]

約数ペア:

[(1, 18845265), (3, 6281755), (5, 3769053), (15, 1256351), (17, 1108545), (51, 369515), (85, 221709), (255, 73903), (263, 71655), (281, 67065), (789, 23885), (843, 22355), (1315, 14331), (1405, 13413), (3945, 4777), (4215, 4471)]