21217756

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39883}}^1$

素因数の和:39913

約数の個数: 24

約数和(自身を含む): 44670080

約数和(自身を除く): 23452324

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39883, 79766, 159532, 279181, 558362, 757777, 1116724, 1515554, 3031108, 5304439, 10608878, 21217756]

約数ペア:

[(1, 21217756), (2, 10608878), (4, 5304439), (7, 3031108), (14, 1515554), (19, 1116724), (28, 757777), (38, 558362), (76, 279181), (133, 159532), (266, 79766), (532, 39883)]