28039858

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:120

約数の個数: 72

約数和(自身を含む): 57743280

約数和(自身を除く): 29703422

約数列:

[1, 2, 7, 11, 14, 19, 22, 37, 38, 49, 74, 77, 98, 133, 154, 209, 259, 266, 407, 418, 518, 539, 703, 814, 931, 1078, 1369, 1406, 1463, 1813, 1862, 2738, 2849, 2926, 3626, 4921, 5698, 7733, 9583, 9842, 10241, 15059, 15466, 19166, 19943, 20482, 26011, 30118, 34447, 39886, 52022, 54131, 67081, 68894, 105413, 108262, 134162, 182077, 210826, 286121, 364154, 378917, 572242, 737891, 757834, 1274539, 1475782, 2002847, 2549078, 4005694, 14019929, 28039858]

約数ペア:

[(1, 28039858), (2, 14019929), (7, 4005694), (11, 2549078), (14, 2002847), (19, 1475782), (22, 1274539), (37, 757834), (38, 737891), (49, 572242), (74, 378917), (77, 364154), (98, 286121), (133, 210826), (154, 182077), (209, 134162), (259, 108262), (266, 105413), (407, 68894), (418, 67081), (518, 54131), (539, 52022), (703, 39886), (814, 34447), (931, 30118), (1078, 26011), (1369, 20482), (1406, 19943), (1463, 19166), (1813, 15466), (1862, 15059), (2738, 10241), (2849, 9842), (2926, 9583), (3626, 7733), (4921, 5698)]