28751012500

素因数分解:

$2^2\times 5^5\times 7^1\times {\mathrm{457}}^1\times {\mathrm{719}}^1$

素因数の和:1212

約数の個数: 144

約数和(自身を含む): 72130383360

約数和(自身を除く): 43379370860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 457, 500, 625, 700, 719, 875, 914, 1250, 1438, 1750, 1828, 2285, 2500, 2876, 3125, 3199, 3500, 3595, 4375, 4570, 5033, 6250, 6398, 7190, 8750, 9140, 10066, 11425, 12500, 12796, 14380, 15995, 17500, 17975, 20132, 21875, 22850, 25165, 31990, 35950, 43750, 45700, 50330, 57125, 63980, 71900, 79975, 87500, 89875, 100660, 114250, 125825, 159950, 179750, 228500, 251650, 285625, 319900, 328583, 359500, 399875, 449375, 503300, 571250, 629125, 657166, 799750, 898750, 1142500, 1258250, 1314332, 1428125, 1599500, 1642915, 1797500, 1999375, 2246875, 2300081, 2516500, 2856250, 3145625, 3285830, 3998750, 4493750, 4600162, 5712500, 6291250, 6571660, 7997500, 8214575, 8987500, 9200324, 9996875, 11500405, 12582500, 15728125, 16429150, 19993750, 23000810, 31456250, 32858300, 39987500, 41072875, 46001620, 57502025, 62912500, 82145750, 115004050, 164291500, 205364375, 230008100, 287510125, 410728750, 575020250, 821457500, 1026821875, 1150040500, 1437550625, 2053643750, 2875101250, 4107287500, 5750202500, 7187753125, 14375506250, 28751012500]

約数ペア:

[(1, 28751012500), (2, 14375506250), (4, 7187753125), (5, 5750202500), (7, 4107287500), (10, 2875101250), (14, 2053643750), (20, 1437550625), (25, 1150040500), (28, 1026821875), (35, 821457500), (50, 575020250), (70, 410728750), (100, 287510125), (125, 230008100), (140, 205364375), (175, 164291500), (250, 115004050), (350, 82145750), (457, 62912500), (500, 57502025), (625, 46001620), (700, 41072875), (719, 39987500), (875, 32858300), (914, 31456250), (1250, 23000810), (1438, 19993750), (1750, 16429150), (1828, 15728125), (2285, 12582500), (2500, 11500405), (2876, 9996875), (3125, 9200324), (3199, 8987500), (3500, 8214575), (3595, 7997500), (4375, 6571660), (4570, 6291250), (5033, 5712500), (6250, 4600162), (6398, 4493750), (7190, 3998750), (8750, 3285830), (9140, 3145625), (10066, 2856250), (11425, 2516500), (12500, 2300081), (12796, 2246875), (14380, 1999375), (15995, 1797500), (17500, 1642915), (17975, 1599500), (20132, 1428125), (21875, 1314332), (22850, 1258250), (25165, 1142500), (31990, 898750), (35950, 799750), (43750, 657166), (45700, 629125), (50330, 571250), (57125, 503300), (63980, 449375), (71900, 399875), (79975, 359500), (87500, 328583), (89875, 319900), (100660, 285625), (114250, 251650), (125825, 228500), (159950, 179750)]