19801270

素因数分解:

$2^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{7529}}^1$

素因数の和:7799

約数の個数: 16

約数和(自身を含む): 35782560

約数和(自身を除く): 15981290

約数列:

[1, 2, 5, 10, 263, 526, 1315, 2630, 7529, 15058, 37645, 75290, 1980127, 3960254, 9900635, 19801270]

約数ペア:

[(1, 19801270), (2, 9900635), (5, 3960254), (10, 1980127), (263, 75290), (526, 37645), (1315, 15058), (2630, 7529)]