20179420

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2341}}^1$

素因数の和:2781

約数の個数: 24

約数和(自身を含む): 42493248

約数和(自身を除く): 22313828

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 2341, 4310, 4682, 8620, 9364, 11705, 23410, 46820, 1008971, 2017942, 4035884, 5044855, 10089710, 20179420]

約数ペア:

[(1, 20179420), (2, 10089710), (4, 5044855), (5, 4035884), (10, 2017942), (20, 1008971), (431, 46820), (862, 23410), (1724, 11705), (2155, 9364), (2341, 8620), (4310, 4682)]