20401255

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18803}}^1$

素因数の和:18846

約数の個数: 16

約数和(自身を含む): 28882944

約数和(自身を除く): 8481689

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18803, 94015, 131621, 582893, 658105, 2914465, 4080251, 20401255]

約数ペア:

[(1, 20401255), (5, 4080251), (7, 2914465), (31, 658105), (35, 582893), (155, 131621), (217, 94015), (1085, 18803)]