18990468

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 55298880

約数和(自身を除く): 36308412

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 179, 252, 358, 421, 537, 716, 842, 1074, 1253, 1263, 1611, 1684, 2148, 2506, 2526, 2947, 3222, 3759, 3789, 5012, 5052, 5894, 6444, 7518, 7578, 8841, 11277, 11788, 15036, 15156, 17682, 22554, 26523, 35364, 45108, 53046, 75359, 106092, 150718, 226077, 301436, 452154, 527513, 678231, 904308, 1055026, 1356462, 1582539, 2110052, 2712924, 3165078, 4747617, 6330156, 9495234, 18990468]

約数ペア:

[(1, 18990468), (2, 9495234), (3, 6330156), (4, 4747617), (6, 3165078), (7, 2712924), (9, 2110052), (12, 1582539), (14, 1356462), (18, 1055026), (21, 904308), (28, 678231), (36, 527513), (42, 452154), (63, 301436), (84, 226077), (126, 150718), (179, 106092), (252, 75359), (358, 53046), (421, 45108), (537, 35364), (716, 26523), (842, 22554), (1074, 17682), (1253, 15156), (1263, 15036), (1611, 11788), (1684, 11277), (2148, 8841), (2506, 7578), (2526, 7518), (2947, 6444), (3222, 5894), (3759, 5052), (3789, 5012)]