420780404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{869381}}^1$

素因数の和:869407

約数の個数: 18

約数和(自身を含む): 809394642

約数和(自身を除く): 388614238

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 869381, 1738762, 3477524, 9563191, 19126382, 38252764, 105195101, 210390202, 420780404]

約数ペア:

[(1, 420780404), (2, 210390202), (4, 105195101), (11, 38252764), (22, 19126382), (44, 9563191), (121, 3477524), (242, 1738762), (484, 869381)]