42980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{307}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 103488

約数和(自身を除く): 60508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 307, 614, 1228, 1535, 2149, 3070, 4298, 6140, 8596, 10745, 21490, 42980]

約数ペア:

[(1, 42980), (2, 21490), (4, 10745), (5, 8596), (7, 6140), (10, 4298), (14, 3070), (20, 2149), (28, 1535), (35, 1228), (70, 614), (140, 307)]