18639663

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29736960

約数和(自身を除く): 11097297

約数列:

[1, 3, 7, 21, 29, 87, 127, 203, 241, 381, 609, 723, 889, 1687, 2667, 3683, 5061, 6989, 11049, 20967, 25781, 30607, 48923, 77343, 91821, 146769, 214249, 642747, 887603, 2662809, 6213221, 18639663]

約数ペア:

[(1, 18639663), (3, 6213221), (7, 2662809), (21, 887603), (29, 642747), (87, 214249), (127, 146769), (203, 91821), (241, 77343), (381, 48923), (609, 30607), (723, 25781), (889, 20967), (1687, 11049), (2667, 6989), (3683, 5061)]