21247772

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27015268

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 269, 364, 403, 434, 538, 637, 806, 868, 1076, 1274, 1519, 1612, 1883, 2548, 2821, 3038, 3497, 3766, 5642, 6076, 6994, 7532, 8339, 11284, 13181, 13988, 16678, 19747, 24479, 26362, 33356, 39494, 48958, 52724, 58373, 78988, 97916, 108407, 116746, 171353, 216814, 233492, 342706, 408611, 433628, 685412, 758849, 817222, 1517698, 1634444, 3035396, 5311943, 10623886, 21247772]

約数ペア:

[(1, 21247772), (2, 10623886), (4, 5311943), (7, 3035396), (13, 1634444), (14, 1517698), (26, 817222), (28, 758849), (31, 685412), (49, 433628), (52, 408611), (62, 342706), (91, 233492), (98, 216814), (124, 171353), (182, 116746), (196, 108407), (217, 97916), (269, 78988), (364, 58373), (403, 52724), (434, 48958), (538, 39494), (637, 33356), (806, 26362), (868, 24479), (1076, 19747), (1274, 16678), (1519, 13988), (1612, 13181), (1883, 11284), (2548, 8339), (2821, 7532), (3038, 6994), (3497, 6076), (3766, 5642)]