199979995

素因数分解:

$5^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1\times {\mathrm{1723}}^1$

素因数の和:2034

約数の個数: 16

約数和(自身を含む): 243290880

約数和(自身を除く): 43310885

約数列:

[1, 5, 139, 167, 695, 835, 1723, 8615, 23213, 116065, 239497, 287741, 1197485, 1438705, 39995999, 199979995]

約数ペア:

[(1, 199979995), (5, 39995999), (139, 1438705), (167, 1197485), (695, 287741), (835, 239497), (1723, 116065), (8615, 23213)]