256260400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1$

素因数の和:587

約数の個数: 120

約数和(自身を含む): 678081600

約数和(自身を除く): 421821200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 139, 176, 200, 220, 275, 278, 400, 419, 440, 550, 556, 695, 838, 880, 1100, 1112, 1390, 1529, 1676, 2095, 2200, 2224, 2780, 3058, 3352, 3475, 4190, 4400, 4609, 5560, 6116, 6704, 6950, 7645, 8380, 9218, 10475, 11120, 12232, 13900, 15290, 16760, 18436, 20950, 23045, 24464, 27800, 30580, 33520, 36872, 38225, 41900, 46090, 55600, 58241, 61160, 73744, 76450, 83800, 92180, 115225, 116482, 122320, 152900, 167600, 184360, 230450, 232964, 291205, 305800, 368720, 460900, 465928, 582410, 611600, 640651, 921800, 931856, 1164820, 1281302, 1456025, 1843600, 2329640, 2562604, 2912050, 3203255, 4659280, 5125208, 5824100, 6406510, 10250416, 11648200, 12813020, 16016275, 23296400, 25626040, 32032550, 51252080, 64065100, 128130200, 256260400]

約数ペア:

[(1, 256260400), (2, 128130200), (4, 64065100), (5, 51252080), (8, 32032550), (10, 25626040), (11, 23296400), (16, 16016275), (20, 12813020), (22, 11648200), (25, 10250416), (40, 6406510), (44, 5824100), (50, 5125208), (55, 4659280), (80, 3203255), (88, 2912050), (100, 2562604), (110, 2329640), (139, 1843600), (176, 1456025), (200, 1281302), (220, 1164820), (275, 931856), (278, 921800), (400, 640651), (419, 611600), (440, 582410), (550, 465928), (556, 460900), (695, 368720), (838, 305800), (880, 291205), (1100, 232964), (1112, 230450), (1390, 184360), (1529, 167600), (1676, 152900), (2095, 122320), (2200, 116482), (2224, 115225), (2780, 92180), (3058, 83800), (3352, 76450), (3475, 73744), (4190, 61160), (4400, 58241), (4609, 55600), (5560, 46090), (6116, 41900), (6704, 38225), (6950, 36872), (7645, 33520), (8380, 30580), (9218, 27800), (10475, 24464), (11120, 23045), (12232, 20950), (13900, 18436), (15290, 16760)]