21218452

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{809}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16883948

約数列:

[1, 2, 4, 79, 83, 158, 166, 316, 332, 809, 1618, 3236, 6557, 13114, 26228, 63911, 67147, 127822, 134294, 255644, 268588, 5304613, 10609226, 21218452]

約数ペア:

[(1, 21218452), (2, 10609226), (4, 5304613), (79, 268588), (83, 255644), (158, 134294), (166, 127822), (316, 67147), (332, 63911), (809, 26228), (1618, 13114), (3236, 6557)]