20871158

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1065

約数の個数: 48

約数和(自身を含む): 41860800

約数和(自身を除く): 20989642

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 77, 98, 133, 154, 209, 266, 418, 539, 931, 1019, 1078, 1463, 1862, 2038, 2926, 7133, 10241, 11209, 14266, 19361, 20482, 22418, 38722, 49931, 78463, 99862, 135527, 156926, 212971, 271054, 425942, 549241, 948689, 1098482, 1490797, 1897378, 2981594, 10435579, 20871158]

約数ペア:

[(1, 20871158), (2, 10435579), (7, 2981594), (11, 1897378), (14, 1490797), (19, 1098482), (22, 948689), (38, 549241), (49, 425942), (77, 271054), (98, 212971), (133, 156926), (154, 135527), (209, 99862), (266, 78463), (418, 49931), (539, 38722), (931, 22418), (1019, 20482), (1078, 19361), (1463, 14266), (1862, 11209), (2038, 10241), (2926, 7133)]