20806300880

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{603431}}^1$

素因数の和:603875

約数の個数: 40

約数和(自身を含む): 48486968064

約数和(自身を除く): 27680667184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 2155, 3448, 4310, 6896, 8620, 17240, 34480, 603431, 1206862, 2413724, 3017155, 4827448, 6034310, 9654896, 12068620, 24137240, 48274480, 260078761, 520157522, 1040315044, 1300393805, 2080630088, 2600787610, 4161260176, 5201575220, 10403150440, 20806300880]

約数ペア:

[(1, 20806300880), (2, 10403150440), (4, 5201575220), (5, 4161260176), (8, 2600787610), (10, 2080630088), (16, 1300393805), (20, 1040315044), (40, 520157522), (80, 260078761), (431, 48274480), (862, 24137240), (1724, 12068620), (2155, 9654896), (3448, 6034310), (4310, 4827448), (6896, 3017155), (8620, 2413724), (17240, 1206862), (34480, 603431)]