1388406418

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{563}}^1$

素因数の和:791

約数の個数: 64

約数和(自身を含む): 2564259840

約数和(自身を除く): 1175853422

約数列:

[1, 2, 7, 14, 19, 38, 73, 127, 133, 146, 254, 266, 511, 563, 889, 1022, 1126, 1387, 1778, 2413, 2774, 3941, 4826, 7882, 9271, 9709, 10697, 16891, 18542, 19418, 21394, 33782, 41099, 64897, 71501, 74879, 82198, 129794, 143002, 149758, 176149, 287693, 352298, 500507, 575386, 780881, 1001014, 1233043, 1358519, 1561762, 2466086, 2717038, 5219573, 5466167, 9509633, 10439146, 10932334, 19019266, 36537011, 73074022, 99171887, 198343774, 694203209, 1388406418]

約数ペア:

[(1, 1388406418), (2, 694203209), (7, 198343774), (14, 99171887), (19, 73074022), (38, 36537011), (73, 19019266), (127, 10932334), (133, 10439146), (146, 9509633), (254, 5466167), (266, 5219573), (511, 2717038), (563, 2466086), (889, 1561762), (1022, 1358519), (1126, 1233043), (1387, 1001014), (1778, 780881), (2413, 575386), (2774, 500507), (3941, 352298), (4826, 287693), (7882, 176149), (9271, 149758), (9709, 143002), (10697, 129794), (16891, 82198), (18542, 74879), (19418, 71501), (21394, 64897), (33782, 41099)]