21997270

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{14011}}^1$

素因数の和:14175

約数の個数: 16

約数和(自身を含む): 39850128

約数和(自身を除く): 17852858

約数列:

[1, 2, 5, 10, 157, 314, 785, 1570, 14011, 28022, 70055, 140110, 2199727, 4399454, 10998635, 21997270]

約数ペア:

[(1, 21997270), (2, 10998635), (5, 4399454), (10, 2199727), (157, 140110), (314, 70055), (785, 28022), (1570, 14011)]