2021207419

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{743}}^1$

素因数の和:885

約数の個数: 40

約数和(自身を含む): 2600762112

約数和(自身を除く): 579554693

約数列:

[1, 7, 11, 49, 77, 103, 343, 539, 721, 743, 1133, 2401, 3773, 5047, 5201, 7931, 8173, 26411, 35329, 36407, 55517, 57211, 76529, 247303, 254849, 388619, 400477, 535703, 841819, 1783943, 2720333, 2803339, 3749921, 5892733, 19623373, 26249447, 41249131, 183746129, 288743917, 2021207419]

約数ペア:

[(1, 2021207419), (7, 288743917), (11, 183746129), (49, 41249131), (77, 26249447), (103, 19623373), (343, 5892733), (539, 3749921), (721, 2803339), (743, 2720333), (1133, 1783943), (2401, 841819), (3773, 535703), (5047, 400477), (5201, 388619), (7931, 254849), (8173, 247303), (26411, 76529), (35329, 57211), (36407, 55517)]