18974008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2903}}^1$

素因数の和:2971

約数の個数: 32

約数和(自身を含む): 38332800

約数和(自身を除く): 19358792

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 2903, 3268, 5806, 6536, 11612, 23224, 55157, 110314, 124829, 220628, 249658, 441256, 499316, 998632, 2371751, 4743502, 9487004, 18974008]

約数ペア:

[(1, 18974008), (2, 9487004), (4, 4743502), (8, 2371751), (19, 998632), (38, 499316), (43, 441256), (76, 249658), (86, 220628), (152, 124829), (172, 110314), (344, 55157), (817, 23224), (1634, 11612), (2903, 6536), (3268, 5806)]