402810408020

素因数分解:

$2^2\times 5^1\times {\mathrm{20140520401}}^1$

素因数の和:20140520410

約数の個数: 12

約数和(自身を含む): 845901856884

約数和(自身を除く): 443091448864

約数列:

[1, 2, 4, 5, 10, 20, 20140520401, 40281040802, 80562081604, 100702602005, 201405204010, 402810408020]

約数ペア:

[(1, 402810408020), (2, 201405204010), (4, 100702602005), (5, 80562081604), (10, 40281040802), (20, 20140520401)]