20381746

素因数分解:

$2^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 40492800

約数和(自身を除く): 20111054

約数列:

[1, 2, 7, 11, 14, 22, 37, 49, 73, 74, 77, 98, 146, 154, 259, 343, 407, 511, 518, 539, 686, 803, 814, 1022, 1078, 1606, 1813, 2701, 2849, 3577, 3626, 3773, 5402, 5621, 5698, 7154, 7546, 11242, 12691, 18907, 19943, 25039, 25382, 29711, 37814, 39347, 39886, 50078, 59422, 78694, 132349, 139601, 207977, 264698, 275429, 279202, 415954, 550858, 926443, 1455839, 1852886, 2911678, 10190873, 20381746]

約数ペア:

[(1, 20381746), (2, 10190873), (7, 2911678), (11, 1852886), (14, 1455839), (22, 926443), (37, 550858), (49, 415954), (73, 279202), (74, 275429), (77, 264698), (98, 207977), (146, 139601), (154, 132349), (259, 78694), (343, 59422), (407, 50078), (511, 39886), (518, 39347), (539, 37814), (686, 29711), (803, 25382), (814, 25039), (1022, 19943), (1078, 18907), (1606, 12691), (1813, 11242), (2701, 7546), (2849, 7154), (3577, 5698), (3626, 5621), (3773, 5402)]