209157900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{727}}^1$

素因数の和:888

約数の個数: 144

約数和(自身を含む): 697622016

約数和(自身を除く): 488464116

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 137, 140, 150, 175, 210, 274, 300, 350, 411, 420, 525, 548, 685, 700, 727, 822, 959, 1050, 1370, 1454, 1644, 1918, 2055, 2100, 2181, 2740, 2877, 2908, 3425, 3635, 3836, 4110, 4362, 4795, 5089, 5754, 6850, 7270, 8220, 8724, 9590, 10178, 10275, 10905, 11508, 13700, 14385, 14540, 15267, 18175, 19180, 20356, 20550, 21810, 23975, 25445, 28770, 30534, 36350, 41100, 43620, 47950, 50890, 54525, 57540, 61068, 71925, 72700, 76335, 95900, 99599, 101780, 109050, 127225, 143850, 152670, 199198, 218100, 254450, 287700, 298797, 305340, 381675, 398396, 497995, 508900, 597594, 697193, 763350, 995990, 1195188, 1394386, 1493985, 1526700, 1991980, 2091579, 2489975, 2788772, 2987970, 3485965, 4183158, 4979950, 5975940, 6971930, 7469925, 8366316, 9959900, 10457895, 13943860, 14939850, 17429825, 20915790, 29879700, 34859650, 41831580, 52289475, 69719300, 104578950, 209157900]

約数ペア:

[(1, 209157900), (2, 104578950), (3, 69719300), (4, 52289475), (5, 41831580), (6, 34859650), (7, 29879700), (10, 20915790), (12, 17429825), (14, 14939850), (15, 13943860), (20, 10457895), (21, 9959900), (25, 8366316), (28, 7469925), (30, 6971930), (35, 5975940), (42, 4979950), (50, 4183158), (60, 3485965), (70, 2987970), (75, 2788772), (84, 2489975), (100, 2091579), (105, 1991980), (137, 1526700), (140, 1493985), (150, 1394386), (175, 1195188), (210, 995990), (274, 763350), (300, 697193), (350, 597594), (411, 508900), (420, 497995), (525, 398396), (548, 381675), (685, 305340), (700, 298797), (727, 287700), (822, 254450), (959, 218100), (1050, 199198), (1370, 152670), (1454, 143850), (1644, 127225), (1918, 109050), (2055, 101780), (2100, 99599), (2181, 95900), (2740, 76335), (2877, 72700), (2908, 71925), (3425, 61068), (3635, 57540), (3836, 54525), (4110, 50890), (4362, 47950), (4795, 43620), (5089, 41100), (5754, 36350), (6850, 30534), (7270, 28770), (8220, 25445), (8724, 23975), (9590, 21810), (10178, 20550), (10275, 20356), (10905, 19180), (11508, 18175), (13700, 15267), (14385, 14540)]