19985966

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 21140434

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 67, 77, 91, 134, 143, 149, 154, 182, 286, 298, 469, 737, 871, 938, 1001, 1043, 1474, 1639, 1742, 1937, 2002, 2086, 3278, 3874, 5159, 6097, 9581, 9983, 10318, 11473, 12194, 13559, 19162, 19966, 21307, 22946, 27118, 42614, 67067, 69881, 109813, 129779, 134134, 139762, 149149, 219626, 259558, 298298, 768691, 908453, 1427569, 1537382, 1816906, 2855138, 9992983, 19985966]

約数ペア:

[(1, 19985966), (2, 9992983), (7, 2855138), (11, 1816906), (13, 1537382), (14, 1427569), (22, 908453), (26, 768691), (67, 298298), (77, 259558), (91, 219626), (134, 149149), (143, 139762), (149, 134134), (154, 129779), (182, 109813), (286, 69881), (298, 67067), (469, 42614), (737, 27118), (871, 22946), (938, 21307), (1001, 19966), (1043, 19162), (1474, 13559), (1639, 12194), (1742, 11473), (1937, 10318), (2002, 9983), (2086, 9581), (3278, 6097), (3874, 5159)]