20705980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45013}}^1$

素因数の和:45045

約数の個数: 24

約数和(自身を含む): 45374112

約数和(自身を除く): 24668132

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45013, 90026, 180052, 225065, 450130, 900260, 1035299, 2070598, 4141196, 5176495, 10352990, 20705980]

約数ペア:

[(1, 20705980), (2, 10352990), (4, 5176495), (5, 4141196), (10, 2070598), (20, 1035299), (23, 900260), (46, 450130), (92, 225065), (115, 180052), (230, 90026), (460, 45013)]