15785231

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 21565440

約数和(自身を除く): 5780209

約数列:

[1, 7, 11, 17, 31, 77, 119, 187, 217, 341, 389, 527, 1309, 2387, 2723, 3689, 4279, 5797, 6613, 12059, 29953, 40579, 46291, 72743, 84413, 132649, 205003, 509201, 928543, 1435021, 2255033, 15785231]

約数ペア:

[(1, 15785231), (7, 2255033), (11, 1435021), (17, 928543), (31, 509201), (77, 205003), (119, 132649), (187, 84413), (217, 72743), (341, 46291), (389, 40579), (527, 29953), (1309, 12059), (2387, 6613), (2723, 5797), (3689, 4279)]