81507568

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1361}}^1$

素因数の和:1585

約数の個数: 40

約数和(自身を含む): 167199120

約数和(自身を除く): 85691552

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 197, 304, 394, 788, 1361, 1576, 2722, 3152, 3743, 5444, 7486, 10888, 14972, 21776, 25859, 29944, 51718, 59888, 103436, 206872, 268117, 413744, 536234, 1072468, 2144936, 4289872, 5094223, 10188446, 20376892, 40753784, 81507568]

約数ペア:

[(1, 81507568), (2, 40753784), (4, 20376892), (8, 10188446), (16, 5094223), (19, 4289872), (38, 2144936), (76, 1072468), (152, 536234), (197, 413744), (304, 268117), (394, 206872), (788, 103436), (1361, 59888), (1576, 51718), (2722, 29944), (3152, 25859), (3743, 21776), (5444, 14972), (7486, 10888)]