20562741

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:275

約数の個数: 40

約数和(自身を含む): 33062040

約数和(自身を除く): 12499299

約数列:

[1, 3, 9, 17, 27, 51, 81, 109, 137, 153, 327, 411, 459, 981, 1233, 1377, 1853, 2329, 2943, 3699, 5559, 6987, 8829, 11097, 14933, 16677, 20961, 44799, 50031, 62883, 134397, 150093, 188649, 253861, 403191, 761583, 1209573, 2284749, 6854247, 20562741]

約数ペア:

[(1, 20562741), (3, 6854247), (9, 2284749), (17, 1209573), (27, 761583), (51, 403191), (81, 253861), (109, 188649), (137, 150093), (153, 134397), (327, 62883), (411, 50031), (459, 44799), (981, 20961), (1233, 16677), (1377, 14933), (1853, 11097), (2329, 8829), (2943, 6987), (3699, 5559)]