81131884

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{471697}}^1$

素因数の和:471744

約数の個数: 12

約数和(自身を含む): 145282984

約数和(自身を除く): 64151100

約数列:

[1, 2, 4, 43, 86, 172, 471697, 943394, 1886788, 20282971, 40565942, 81131884]

約数ペア:

[(1, 81131884), (2, 40565942), (4, 20282971), (43, 1886788), (86, 943394), (172, 471697)]