21582165

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:111

約数の個数: 64

約数和(自身を含む): 40476672

約数和(自身を除く): 18894507

約数列:

[1, 3, 5, 11, 15, 23, 33, 47, 55, 69, 115, 121, 141, 165, 235, 253, 345, 363, 517, 605, 705, 759, 1081, 1265, 1331, 1551, 1815, 2585, 2783, 3243, 3795, 3993, 5405, 5687, 6655, 7755, 8349, 11891, 13915, 16215, 17061, 19965, 28435, 30613, 35673, 41745, 59455, 62557, 85305, 91839, 130801, 153065, 178365, 187671, 312785, 392403, 459195, 654005, 938355, 1438811, 1962015, 4316433, 7194055, 21582165]

約数ペア:

[(1, 21582165), (3, 7194055), (5, 4316433), (11, 1962015), (15, 1438811), (23, 938355), (33, 654005), (47, 459195), (55, 392403), (69, 312785), (115, 187671), (121, 178365), (141, 153065), (165, 130801), (235, 91839), (253, 85305), (345, 62557), (363, 59455), (517, 41745), (605, 35673), (705, 30613), (759, 28435), (1081, 19965), (1265, 17061), (1331, 16215), (1551, 13915), (1815, 11891), (2585, 8349), (2783, 7755), (3243, 6655), (3795, 5687), (3993, 5405)]