20342980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145307}}^1$

素因数の和:145323

約数の個数: 24

約数和(自身を含む): 48823488

約数和(自身を除く): 28480508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145307, 290614, 581228, 726535, 1017149, 1453070, 2034298, 2906140, 4068596, 5085745, 10171490, 20342980]

約数ペア:

[(1, 20342980), (2, 10171490), (4, 5085745), (5, 4068596), (7, 2906140), (10, 2034298), (14, 1453070), (20, 1017149), (28, 726535), (35, 581228), (70, 290614), (140, 145307)]