20778434

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{1117}}^1$

素因数の和:1321

約数の個数: 16

約数和(自身を含む): 31876416

約数和(自身を除く): 11097982

約数列:

[1, 2, 71, 131, 142, 262, 1117, 2234, 9301, 18602, 79307, 146327, 158614, 292654, 10389217, 20778434]

約数ペア:

[(1, 20778434), (2, 10389217), (71, 292654), (131, 158614), (142, 146327), (262, 79307), (1117, 18602), (2234, 9301)]