20185443

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:273

約数の個数: 40

約数和(自身を含む): 32460912

約数和(自身を除く): 12275469

約数列:

[1, 3, 9, 17, 27, 51, 81, 107, 137, 153, 321, 411, 459, 963, 1233, 1377, 1819, 2329, 2889, 3699, 5457, 6987, 8667, 11097, 14659, 16371, 20961, 43977, 49113, 62883, 131931, 147339, 188649, 249203, 395793, 747609, 1187379, 2242827, 6728481, 20185443]

約数ペア:

[(1, 20185443), (3, 6728481), (9, 2242827), (17, 1187379), (27, 747609), (51, 395793), (81, 249203), (107, 188649), (137, 147339), (153, 131931), (321, 62883), (411, 49113), (459, 43977), (963, 20961), (1233, 16371), (1377, 14659), (1819, 11097), (2329, 8667), (2889, 6987), (3699, 5457)]