19940555

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 24681888

約数和(自身を除く): 4741333

約数列:

[1, 5, 41, 205, 211, 461, 1055, 2305, 8651, 18901, 43255, 94505, 97271, 486355, 3988111, 19940555]

約数ペア:

[(1, 19940555), (5, 3988111), (41, 486355), (205, 97271), (211, 94505), (461, 43255), (1055, 18901), (2305, 8651)]