21805736

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20807}}^1$

素因数の和:20944

約数の個数: 16

約数和(自身を含む): 41199840

約数和(自身を除く): 19394104

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20807, 41614, 83228, 166456, 2725717, 5451434, 10902868, 21805736]

約数ペア:

[(1, 21805736), (2, 10902868), (4, 5451434), (8, 2725717), (131, 166456), (262, 83228), (524, 41614), (1048, 20807)]