19809860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141499}}^1$

素因数の和:141515

約数の個数: 24

約数和(自身を含む): 47544000

約数和(自身を除く): 27734140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141499, 282998, 565996, 707495, 990493, 1414990, 1980986, 2829980, 3961972, 4952465, 9904930, 19809860]

約数ペア:

[(1, 19809860), (2, 9904930), (4, 4952465), (5, 3961972), (7, 2829980), (10, 1980986), (14, 1414990), (20, 990493), (28, 707495), (35, 565996), (70, 282998), (140, 141499)]