20554401

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6569}}^1$

素因数の和:6728

約数の個数: 16

約数和(自身を含む): 31536000

約数和(自身を除く): 10981599

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6569, 19707, 45983, 137949, 978781, 2936343, 6851467, 20554401]

約数ペア:

[(1, 20554401), (3, 6851467), (7, 2936343), (21, 978781), (149, 137949), (447, 45983), (1043, 19707), (3129, 6569)]