19886538

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 47628288

約数和(自身を除く): 27741750

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 67, 74, 111, 134, 191, 201, 222, 259, 382, 402, 469, 518, 573, 777, 938, 1146, 1337, 1407, 1554, 2479, 2674, 2814, 4011, 4958, 7067, 7437, 8022, 12797, 14134, 14874, 17353, 21201, 25594, 34706, 38391, 42402, 49469, 52059, 76782, 89579, 98938, 104118, 148407, 179158, 268737, 296814, 473489, 537474, 946978, 1420467, 2840934, 3314423, 6628846, 9943269, 19886538]

約数ペア:

[(1, 19886538), (2, 9943269), (3, 6628846), (6, 3314423), (7, 2840934), (14, 1420467), (21, 946978), (37, 537474), (42, 473489), (67, 296814), (74, 268737), (111, 179158), (134, 148407), (191, 104118), (201, 98938), (222, 89579), (259, 76782), (382, 52059), (402, 49469), (469, 42402), (518, 38391), (573, 34706), (777, 25594), (938, 21201), (1146, 17353), (1337, 14874), (1407, 14134), (1554, 12797), (2479, 8022), (2674, 7437), (2814, 7067), (4011, 4958)]