64103800

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1627}}^1$

素因数の和:1840

約数の個数: 48

約数和(自身を含む): 149889960

約数和(自身を除く): 85786160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 200, 394, 788, 985, 1576, 1627, 1970, 3254, 3940, 4925, 6508, 7880, 8135, 9850, 13016, 16270, 19700, 32540, 39400, 40675, 65080, 81350, 162700, 320519, 325400, 641038, 1282076, 1602595, 2564152, 3205190, 6410380, 8012975, 12820760, 16025950, 32051900, 64103800]

約数ペア:

[(1, 64103800), (2, 32051900), (4, 16025950), (5, 12820760), (8, 8012975), (10, 6410380), (20, 3205190), (25, 2564152), (40, 1602595), (50, 1282076), (100, 641038), (197, 325400), (200, 320519), (394, 162700), (788, 81350), (985, 65080), (1576, 40675), (1627, 39400), (1970, 32540), (3254, 19700), (3940, 16270), (4925, 13016), (6508, 9850), (7880, 8135)]