634481840

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1\times {\mathrm{317}}^1$

素因数の和:654

約数の個数: 80

約数和(自身を含む): 1499046912

約数和(自身を除く): 864565072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 197, 254, 317, 394, 508, 634, 635, 788, 985, 1016, 1268, 1270, 1576, 1585, 1970, 2032, 2536, 2540, 3152, 3170, 3940, 5072, 5080, 6340, 7880, 10160, 12680, 15760, 25019, 25360, 40259, 50038, 62449, 80518, 100076, 124898, 125095, 161036, 200152, 201295, 249796, 250190, 312245, 322072, 400304, 402590, 499592, 500380, 624490, 644144, 805180, 999184, 1000760, 1248980, 1610360, 2001520, 2497960, 3220720, 4995920, 7931023, 15862046, 31724092, 39655115, 63448184, 79310230, 126896368, 158620460, 317240920, 634481840]

約数ペア:

[(1, 634481840), (2, 317240920), (4, 158620460), (5, 126896368), (8, 79310230), (10, 63448184), (16, 39655115), (20, 31724092), (40, 15862046), (80, 7931023), (127, 4995920), (197, 3220720), (254, 2497960), (317, 2001520), (394, 1610360), (508, 1248980), (634, 1000760), (635, 999184), (788, 805180), (985, 644144), (1016, 624490), (1268, 500380), (1270, 499592), (1576, 402590), (1585, 400304), (1970, 322072), (2032, 312245), (2536, 250190), (2540, 249796), (3152, 201295), (3170, 200152), (3940, 161036), (5072, 125095), (5080, 124898), (6340, 100076), (7880, 80518), (10160, 62449), (12680, 50038), (15760, 40259), (25019, 25360)]