21282800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1$

素因数の和:727

約数の個数: 120

約数和(自身を含む): 63841152

約数和(自身を除く): 42558352

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 80, 88, 100, 110, 112, 140, 154, 175, 176, 200, 220, 275, 280, 308, 350, 385, 400, 440, 550, 560, 616, 691, 700, 770, 880, 1100, 1232, 1382, 1400, 1540, 1925, 2200, 2764, 2800, 3080, 3455, 3850, 4400, 4837, 5528, 6160, 6910, 7601, 7700, 9674, 11056, 13820, 15202, 15400, 17275, 19348, 24185, 27640, 30404, 30800, 34550, 38005, 38696, 48370, 53207, 55280, 60808, 69100, 76010, 77392, 96740, 106414, 120925, 121616, 138200, 152020, 190025, 193480, 212828, 241850, 266035, 276400, 304040, 380050, 386960, 425656, 483700, 532070, 608080, 760100, 851312, 967400, 1064140, 1330175, 1520200, 1934800, 2128280, 2660350, 3040400, 4256560, 5320700, 10641400, 21282800]

約数ペア:

[(1, 21282800), (2, 10641400), (4, 5320700), (5, 4256560), (7, 3040400), (8, 2660350), (10, 2128280), (11, 1934800), (14, 1520200), (16, 1330175), (20, 1064140), (22, 967400), (25, 851312), (28, 760100), (35, 608080), (40, 532070), (44, 483700), (50, 425656), (55, 386960), (56, 380050), (70, 304040), (77, 276400), (80, 266035), (88, 241850), (100, 212828), (110, 193480), (112, 190025), (140, 152020), (154, 138200), (175, 121616), (176, 120925), (200, 106414), (220, 96740), (275, 77392), (280, 76010), (308, 69100), (350, 60808), (385, 55280), (400, 53207), (440, 48370), (550, 38696), (560, 38005), (616, 34550), (691, 30800), (700, 30404), (770, 27640), (880, 24185), (1100, 19348), (1232, 17275), (1382, 15400), (1400, 15202), (1540, 13820), (1925, 11056), (2200, 9674), (2764, 7700), (2800, 7601), (3080, 6910), (3455, 6160), (3850, 5528), (4400, 4837)]