208514985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 393776640

約数和(自身を除く): 185261655

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 89, 105, 159, 265, 267, 371, 421, 445, 623, 795, 1113, 1263, 1335, 1855, 1869, 2105, 2947, 3115, 4717, 5565, 6315, 8841, 9345, 14151, 14735, 22313, 23585, 33019, 37469, 44205, 66939, 70755, 99057, 111565, 112407, 156191, 165095, 187345, 262283, 334695, 468573, 495285, 562035, 780955, 786849, 1311415, 1985857, 2342865, 3934245, 5957571, 9929285, 13900999, 29787855, 41702997, 69504995, 208514985]

約数ペア:

[(1, 208514985), (3, 69504995), (5, 41702997), (7, 29787855), (15, 13900999), (21, 9929285), (35, 5957571), (53, 3934245), (89, 2342865), (105, 1985857), (159, 1311415), (265, 786849), (267, 780955), (371, 562035), (421, 495285), (445, 468573), (623, 334695), (795, 262283), (1113, 187345), (1263, 165095), (1335, 156191), (1855, 112407), (1869, 111565), (2105, 99057), (2947, 70755), (3115, 66939), (4717, 44205), (5565, 37469), (6315, 33019), (8841, 23585), (9345, 22313), (14151, 14735)]