161511250

素因数分解:

$2^1\times 5^4\times {\mathrm{129209}}^1$

素因数の和:129231

約数の個数: 20

約数和(自身を含む): 302739030

約数和(自身を除く): 141227780

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 129209, 258418, 646045, 1292090, 3230225, 6460450, 16151125, 32302250, 80755625, 161511250]

約数ペア:

[(1, 161511250), (2, 80755625), (5, 32302250), (10, 16151125), (25, 6460450), (50, 3230225), (125, 1292090), (250, 646045), (625, 258418), (1250, 129209)]