21747628

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40879}}^1$

素因数の和:40909

約数の個数: 24

約数和(自身を含む): 45785600

約数和(自身を除く): 24037972

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40879, 81758, 163516, 286153, 572306, 776701, 1144612, 1553402, 3106804, 5436907, 10873814, 21747628]

約数ペア:

[(1, 21747628), (2, 10873814), (4, 5436907), (7, 3106804), (14, 1553402), (19, 1144612), (28, 776701), (38, 572306), (76, 286153), (133, 163516), (266, 81758), (532, 40879)]