20379128004

素因数分解:

$2^2\times 3^2\times {\mathrm{821}}^1\times {\mathrm{689509}}^1$

素因数の和:690340

約数の個数: 36

約数和(自身を含む): 51576727020

約数和(自身を除く): 31197599016

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 821, 1642, 2463, 3284, 4926, 7389, 9852, 14778, 29556, 689509, 1379018, 2068527, 2758036, 4137054, 6205581, 8274108, 12411162, 24822324, 566086889, 1132173778, 1698260667, 2264347556, 3396521334, 5094782001, 6793042668, 10189564002, 20379128004]

約数ペア:

[(1, 20379128004), (2, 10189564002), (3, 6793042668), (4, 5094782001), (6, 3396521334), (9, 2264347556), (12, 1698260667), (18, 1132173778), (36, 566086889), (821, 24822324), (1642, 12411162), (2463, 8274108), (3284, 6205581), (4926, 4137054), (7389, 2758036), (9852, 2068527), (14778, 1379018), (29556, 689509)]