20865220

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1873}}^1$

素因数の和:2439

約数の個数: 24

約数和(自身を含む): 43919064

約数和(自身を除く): 23053844

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1873, 2228, 2785, 3746, 5570, 7492, 9365, 11140, 18730, 37460, 1043261, 2086522, 4173044, 5216305, 10432610, 20865220]

約数ペア:

[(1, 20865220), (2, 10432610), (4, 5216305), (5, 4173044), (10, 2086522), (20, 1043261), (557, 37460), (1114, 18730), (1873, 11140), (2228, 9365), (2785, 7492), (3746, 5570)]