20730738

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 28620942

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 53, 67, 106, 134, 139, 159, 201, 278, 318, 371, 402, 417, 469, 742, 834, 938, 973, 1113, 1407, 1946, 2226, 2814, 2919, 3551, 5838, 7102, 7367, 9313, 10653, 14734, 18626, 21306, 22101, 24857, 27939, 44202, 49714, 51569, 55878, 65191, 74571, 103138, 130382, 149142, 154707, 195573, 309414, 391146, 493589, 987178, 1480767, 2961534, 3455123, 6910246, 10365369, 20730738]

約数ペア:

[(1, 20730738), (2, 10365369), (3, 6910246), (6, 3455123), (7, 2961534), (14, 1480767), (21, 987178), (42, 493589), (53, 391146), (67, 309414), (106, 195573), (134, 154707), (139, 149142), (159, 130382), (201, 103138), (278, 74571), (318, 65191), (371, 55878), (402, 51569), (417, 49714), (469, 44202), (742, 27939), (834, 24857), (938, 22101), (973, 21306), (1113, 18626), (1407, 14734), (1946, 10653), (2226, 9313), (2814, 7367), (2919, 7102), (3551, 5838)]