21081170061

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1\times {\mathrm{31957}}^1$

素因数の和:32290

約数の個数: 48

約数和(自身を含む): 35868636544

約数和(自身を除く): 14787466483

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 283, 333, 777, 849, 1981, 2331, 2547, 5943, 10471, 17829, 31413, 31957, 73297, 94239, 95871, 219891, 223699, 287613, 659673, 671097, 1182409, 2013291, 3547227, 8276863, 9043831, 10641681, 24830589, 27131493, 63306817, 74491767, 81394479, 189920451, 334621747, 569761353, 1003865241, 2342352229, 3011595723, 7027056687, 21081170061]

約数ペア:

[(1, 21081170061), (3, 7027056687), (7, 3011595723), (9, 2342352229), (21, 1003865241), (37, 569761353), (63, 334621747), (111, 189920451), (259, 81394479), (283, 74491767), (333, 63306817), (777, 27131493), (849, 24830589), (1981, 10641681), (2331, 9043831), (2547, 8276863), (5943, 3547227), (10471, 2013291), (17829, 1182409), (31413, 671097), (31957, 659673), (73297, 287613), (94239, 223699), (95871, 219891)]