219964540

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{27427}}^1$

素因数の和:27837

約数の個数: 24

約数和(自身を含む): 463094352

約数和(自身を除く): 243129812

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 27427, 54854, 109708, 137135, 274270, 548540, 10998227, 21996454, 43992908, 54991135, 109982270, 219964540]

約数ペア:

[(1, 219964540), (2, 109982270), (4, 54991135), (5, 43992908), (10, 21996454), (20, 10998227), (401, 548540), (802, 274270), (1604, 137135), (2005, 109708), (4010, 54854), (8020, 27427)]