2155.0000000

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{613}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 3713472

約数和(自身を除く): 1681377

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 613, 663, 1105, 1839, 3065, 3315, 7969, 9195, 10421, 23907, 31263, 39845, 52105, 119535, 135473, 156315, 406419, 677365, 2032095]

約数ペア:

[(1, 2032095), (3, 677365), (5, 406419), (13, 156315), (15, 135473), (17, 119535), (39, 52105), (51, 39845), (65, 31263), (85, 23907), (195, 10421), (221, 9195), (255, 7969), (613, 3315), (663, 3065), (1105, 1839)]