20155280

素因数分解:

$2^4\times 5^1\times {\mathrm{251941}}^1$

素因数の和:251954

約数の個数: 20

約数和(自身を含む): 46861212

約数和(自身を除く): 26705932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251941, 503882, 1007764, 1259705, 2015528, 2519410, 4031056, 5038820, 10077640, 20155280]

約数ペア:

[(1, 20155280), (2, 10077640), (4, 5038820), (5, 4031056), (8, 2519410), (10, 2015528), (16, 1259705), (20, 1007764), (40, 503882), (80, 251941)]