20790770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 128

約数和(自身を含む): 52641792

約数和(自身を除く): 31851022

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 31, 35, 55, 62, 65, 67, 70, 77, 91, 110, 130, 134, 143, 154, 155, 182, 217, 286, 310, 335, 341, 385, 403, 434, 455, 469, 670, 682, 715, 737, 770, 806, 871, 910, 938, 1001, 1085, 1430, 1474, 1705, 1742, 2002, 2015, 2077, 2170, 2345, 2387, 2821, 3410, 3685, 4030, 4154, 4355, 4433, 4690, 4774, 5005, 5159, 5642, 6097, 7370, 8710, 8866, 9581, 10010, 10318, 10385, 11935, 12194, 14105, 14539, 19162, 20770, 22165, 22847, 23870, 25795, 27001, 28210, 29078, 30485, 31031, 44330, 45694, 47905, 51590, 54002, 60970, 62062, 67067, 72695, 95810, 114235, 134134, 135005, 145390, 155155, 159929, 189007, 228470, 270010, 297011, 310310, 319858, 335335, 378014, 594022, 670670, 799645, 945035, 1485055, 1599290, 1890070, 2079077, 2970110, 4158154, 10395385, 20790770]

約数ペア:

[(1, 20790770), (2, 10395385), (5, 4158154), (7, 2970110), (10, 2079077), (11, 1890070), (13, 1599290), (14, 1485055), (22, 945035), (26, 799645), (31, 670670), (35, 594022), (55, 378014), (62, 335335), (65, 319858), (67, 310310), (70, 297011), (77, 270010), (91, 228470), (110, 189007), (130, 159929), (134, 155155), (143, 145390), (154, 135005), (155, 134134), (182, 114235), (217, 95810), (286, 72695), (310, 67067), (335, 62062), (341, 60970), (385, 54002), (403, 51590), (434, 47905), (455, 45694), (469, 44330), (670, 31031), (682, 30485), (715, 29078), (737, 28210), (770, 27001), (806, 25795), (871, 23870), (910, 22847), (938, 22165), (1001, 20770), (1085, 19162), (1430, 14539), (1474, 14105), (1705, 12194), (1742, 11935), (2002, 10385), (2015, 10318), (2077, 10010), (2170, 9581), (2345, 8866), (2387, 8710), (2821, 7370), (3410, 6097), (3685, 5642), (4030, 5159), (4154, 5005), (4355, 4774), (4433, 4690)]