80682220

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{21121}}^1$

素因数の和:21321

約数の個数: 24

約数和(自身を含む): 170327808

約数和(自身を除く): 89645588

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 21121, 42242, 84484, 105605, 211210, 422420, 4034111, 8068222, 16136444, 20170555, 40341110, 80682220]

約数ペア:

[(1, 80682220), (2, 40341110), (4, 20170555), (5, 16136444), (10, 8068222), (20, 4034111), (191, 422420), (382, 211210), (764, 105605), (955, 84484), (1910, 42242), (3820, 21121)]