21511438

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 14679794

約数列:

[1, 2, 13, 26, 43, 71, 86, 142, 271, 542, 559, 923, 1118, 1846, 3053, 3523, 6106, 7046, 11653, 19241, 23306, 38482, 39689, 79378, 151489, 250133, 302978, 500266, 827363, 1654726, 10755719, 21511438]

約数ペア:

[(1, 21511438), (2, 10755719), (13, 1654726), (26, 827363), (43, 500266), (71, 302978), (86, 250133), (142, 151489), (271, 79378), (542, 39689), (559, 38482), (923, 23306), (1118, 19241), (1846, 11653), (3053, 7046), (3523, 6106)]