28810808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1993}}^1$

素因数の和:2151

約数の個数: 32

約数和(自身を含む): 58623600

約数和(自身を除く): 29812792

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1807, 1993, 3614, 3986, 7228, 7972, 14456, 15944, 25909, 51818, 103636, 207272, 277027, 554054, 1108108, 2216216, 3601351, 7202702, 14405404, 28810808]

約数ペア:

[(1, 28810808), (2, 14405404), (4, 7202702), (8, 3601351), (13, 2216216), (26, 1108108), (52, 554054), (104, 277027), (139, 207272), (278, 103636), (556, 51818), (1112, 25909), (1807, 15944), (1993, 14456), (3614, 7972), (3986, 7228)]