221305371

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{2707}}^1$

素因数の和:2963

約数の個数: 32

約数和(自身を含む): 358755840

約数和(自身を除く): 137450469

約数列:

[1, 3, 7, 17, 21, 51, 119, 229, 357, 687, 1603, 2707, 3893, 4809, 8121, 11679, 18949, 27251, 46019, 56847, 81753, 138057, 322133, 619903, 966399, 1859709, 4339321, 10538351, 13017963, 31615053, 73768457, 221305371]

約数ペア:

[(1, 221305371), (3, 73768457), (7, 31615053), (17, 13017963), (21, 10538351), (51, 4339321), (119, 1859709), (229, 966399), (357, 619903), (687, 322133), (1603, 138057), (2707, 81753), (3893, 56847), (4809, 46019), (8121, 27251), (11679, 18949)]