20956904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{353}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 40589640

約数和(自身を除く): 19632736

約数列:

[1, 2, 4, 8, 41, 82, 164, 181, 328, 353, 362, 706, 724, 1412, 1448, 2824, 7421, 14473, 14842, 28946, 29684, 57892, 59368, 63893, 115784, 127786, 255572, 511144, 2619613, 5239226, 10478452, 20956904]

約数ペア:

[(1, 20956904), (2, 10478452), (4, 5239226), (8, 2619613), (41, 511144), (82, 255572), (164, 127786), (181, 115784), (328, 63893), (353, 59368), (362, 57892), (706, 29684), (724, 28946), (1412, 14842), (1448, 14473), (2824, 7421)]