21242228

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39929}}^1$

素因数の和:39959

約数の個数: 24

約数和(自身を含む): 44721600

約数和(自身を除く): 23479372

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39929, 79858, 159716, 279503, 559006, 758651, 1118012, 1517302, 3034604, 5310557, 10621114, 21242228]

約数ペア:

[(1, 21242228), (2, 10621114), (4, 5310557), (7, 3034604), (14, 1517302), (19, 1118012), (28, 758651), (38, 559006), (76, 279503), (133, 159716), (266, 79858), (532, 39929)]