209920018

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:360

約数の個数: 96

約数和(自身を含む): 433546560

約数和(自身を除く): 223626542

約数列:

[1, 2, 7, 11, 14, 19, 22, 37, 38, 49, 74, 77, 98, 133, 154, 209, 259, 266, 277, 407, 418, 518, 539, 554, 703, 814, 931, 1078, 1406, 1463, 1813, 1862, 1939, 2849, 2926, 3047, 3626, 3878, 4921, 5263, 5698, 6094, 7733, 9842, 10241, 10249, 10526, 13573, 15466, 19943, 20482, 20498, 21329, 27146, 34447, 36841, 39886, 42658, 54131, 57893, 68894, 71743, 73682, 108262, 112739, 115786, 143486, 149303, 194731, 225478, 257887, 298606, 378917, 389462, 405251, 502201, 515774, 757834, 789173, 810502, 1004402, 1363117, 1578346, 2142041, 2726234, 2836757, 4284082, 5524211, 5673514, 9541819, 11048422, 14994287, 19083638, 29988574, 104960009, 209920018]

約数ペア:

[(1, 209920018), (2, 104960009), (7, 29988574), (11, 19083638), (14, 14994287), (19, 11048422), (22, 9541819), (37, 5673514), (38, 5524211), (49, 4284082), (74, 2836757), (77, 2726234), (98, 2142041), (133, 1578346), (154, 1363117), (209, 1004402), (259, 810502), (266, 789173), (277, 757834), (407, 515774), (418, 502201), (518, 405251), (539, 389462), (554, 378917), (703, 298606), (814, 257887), (931, 225478), (1078, 194731), (1406, 149303), (1463, 143486), (1813, 115786), (1862, 112739), (1939, 108262), (2849, 73682), (2926, 71743), (3047, 68894), (3626, 57893), (3878, 54131), (4921, 42658), (5263, 39886), (5698, 36841), (6094, 34447), (7733, 27146), (9842, 21329), (10241, 20498), (10249, 20482), (10526, 19943), (13573, 15466)]