20780004

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{247381}}^1$

素因数の和:247395

約数の個数: 24

約数和(自身を含む): 55413568

約数和(自身を除く): 34633564

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 247381, 494762, 742143, 989524, 1484286, 1731667, 2968572, 3463334, 5195001, 6926668, 10390002, 20780004]

約数ペア:

[(1, 20780004), (2, 10390002), (3, 6926668), (4, 5195001), (6, 3463334), (7, 2968572), (12, 1731667), (14, 1484286), (21, 989524), (28, 742143), (42, 494762), (84, 247381)]