18744280

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4831}}^1$

素因数の和:4939

約数の個数: 32

約数和(自身を含む): 42618240

約数和(自身を除く): 23873960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4831, 9662, 19324, 24155, 38648, 48310, 96620, 193240, 468607, 937214, 1874428, 2343035, 3748856, 4686070, 9372140, 18744280]

約数ペア:

[(1, 18744280), (2, 9372140), (4, 4686070), (5, 3748856), (8, 2343035), (10, 1874428), (20, 937214), (40, 468607), (97, 193240), (194, 96620), (388, 48310), (485, 38648), (776, 24155), (970, 19324), (1940, 9662), (3880, 4831)]