2800155

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 4838400

約数和(自身を除く): 2038245

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 139, 237, 255, 395, 417, 695, 1185, 1343, 2085, 2363, 4029, 6715, 7089, 10981, 11815, 20145, 32943, 35445, 54905, 164715, 186677, 560031, 933385, 2800155]

約数ペア:

[(1, 2800155), (3, 933385), (5, 560031), (15, 186677), (17, 164715), (51, 54905), (79, 35445), (85, 32943), (139, 20145), (237, 11815), (255, 10981), (395, 7089), (417, 6715), (695, 4029), (1185, 2363), (1343, 2085)]