49991300

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 113195880

約数和(自身を除く): 63204580

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 89, 100, 137, 164, 178, 205, 274, 356, 410, 445, 548, 685, 820, 890, 1025, 1370, 1780, 2050, 2225, 2740, 3425, 3649, 4100, 4450, 5617, 6850, 7298, 8900, 11234, 12193, 13700, 14596, 18245, 22468, 24386, 28085, 36490, 48772, 56170, 60965, 72980, 91225, 112340, 121930, 140425, 182450, 243860, 280850, 304825, 364900, 499913, 561700, 609650, 999826, 1219300, 1999652, 2499565, 4999130, 9998260, 12497825, 24995650, 49991300]

約数ペア:

[(1, 49991300), (2, 24995650), (4, 12497825), (5, 9998260), (10, 4999130), (20, 2499565), (25, 1999652), (41, 1219300), (50, 999826), (82, 609650), (89, 561700), (100, 499913), (137, 364900), (164, 304825), (178, 280850), (205, 243860), (274, 182450), (356, 140425), (410, 121930), (445, 112340), (548, 91225), (685, 72980), (820, 60965), (890, 56170), (1025, 48772), (1370, 36490), (1780, 28085), (2050, 24386), (2225, 22468), (2740, 18245), (3425, 14596), (3649, 13700), (4100, 12193), (4450, 11234), (5617, 8900), (6850, 7298)]