28521784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{209719}}^1$

素因数の和:209742

約数の個数: 16

約数和(自身を含む): 56624400

約数和(自身を除く): 28102616

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 209719, 419438, 838876, 1677752, 3565223, 7130446, 14260892, 28521784]

約数ペア:

[(1, 28521784), (2, 14260892), (4, 7130446), (8, 3565223), (17, 1677752), (34, 838876), (68, 419438), (136, 209719)]