81537976

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18233}}^1$

素因数の和:18295

約数の個数: 32

約数和(自身を含む): 168482160

約数和(自身を除く): 86944184

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 18233, 36466, 72932, 145864, 237029, 474058, 784019, 948116, 1568038, 1896232, 3136076, 6272152, 10192247, 20384494, 40768988, 81537976]

約数ペア:

[(1, 81537976), (2, 40768988), (4, 20384494), (8, 10192247), (13, 6272152), (26, 3136076), (43, 1896232), (52, 1568038), (86, 948116), (104, 784019), (172, 474058), (344, 237029), (559, 145864), (1118, 72932), (2236, 36466), (4472, 18233)]