20525776

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21659024

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 251, 269, 304, 502, 538, 1004, 1076, 2008, 2152, 4016, 4304, 4769, 5111, 9538, 10222, 19076, 20444, 38152, 40888, 67519, 76304, 81776, 135038, 270076, 540152, 1080304, 1282861, 2565722, 5131444, 10262888, 20525776]

約数ペア:

[(1, 20525776), (2, 10262888), (4, 5131444), (8, 2565722), (16, 1282861), (19, 1080304), (38, 540152), (76, 270076), (152, 135038), (251, 81776), (269, 76304), (304, 67519), (502, 40888), (538, 38152), (1004, 20444), (1076, 19076), (2008, 10222), (2152, 9538), (4016, 5111), (4304, 4769)]