400022800

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{18869}}^1$

素因数の和:18940

約数の個数: 60

約数和(自身を含む): 979239780

約数和(自身を除く): 579216980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 400, 424, 530, 848, 1060, 1325, 2120, 2650, 4240, 5300, 10600, 18869, 21200, 37738, 75476, 94345, 150952, 188690, 301904, 377380, 471725, 754760, 943450, 1000057, 1509520, 1886900, 2000114, 3773800, 4000228, 5000285, 7547600, 8000456, 10000570, 16000912, 20001140, 25001425, 40002280, 50002850, 80004560, 100005700, 200011400, 400022800]

約数ペア:

[(1, 400022800), (2, 200011400), (4, 100005700), (5, 80004560), (8, 50002850), (10, 40002280), (16, 25001425), (20, 20001140), (25, 16000912), (40, 10000570), (50, 8000456), (53, 7547600), (80, 5000285), (100, 4000228), (106, 3773800), (200, 2000114), (212, 1886900), (265, 1509520), (400, 1000057), (424, 943450), (530, 754760), (848, 471725), (1060, 377380), (1325, 301904), (2120, 188690), (2650, 150952), (4240, 94345), (5300, 75476), (10600, 37738), (18869, 21200)]