20787401718

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{523}}^1\times {\mathrm{53857}}^1$

素因数の和:54429

約数の個数: 48

約数和(自身を含む): 46226967696

約数和(自身を除く): 25439565978

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 523, 738, 1046, 1569, 3138, 4707, 9414, 21443, 42886, 53857, 64329, 107714, 128658, 161571, 192987, 323142, 385974, 484713, 969426, 2208137, 4416274, 6624411, 13248822, 19873233, 28167211, 39746466, 56334422, 84501633, 169003266, 253504899, 507009798, 1154855651, 2309711302, 3464566953, 6929133906, 10393700859, 20787401718]

約数ペア:

[(1, 20787401718), (2, 10393700859), (3, 6929133906), (6, 3464566953), (9, 2309711302), (18, 1154855651), (41, 507009798), (82, 253504899), (123, 169003266), (246, 84501633), (369, 56334422), (523, 39746466), (738, 28167211), (1046, 19873233), (1569, 13248822), (3138, 6624411), (4707, 4416274), (9414, 2208137), (21443, 969426), (42886, 484713), (53857, 385974), (64329, 323142), (107714, 192987), (128658, 161571)]