261803308

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{31}}^3$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 512861440

約数和(自身を除く): 251058132

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 961, 1612, 1922, 2197, 3844, 4394, 5239, 8788, 10478, 12493, 20956, 24986, 29791, 49972, 59582, 68107, 119164, 136214, 162409, 272428, 324818, 387283, 649636, 774566, 1549132, 2111317, 4222634, 5034679, 8445268, 10069358, 20138716, 65450827, 130901654, 261803308]

約数ペア:

[(1, 261803308), (2, 130901654), (4, 65450827), (13, 20138716), (26, 10069358), (31, 8445268), (52, 5034679), (62, 4222634), (124, 2111317), (169, 1549132), (338, 774566), (403, 649636), (676, 387283), (806, 324818), (961, 272428), (1612, 162409), (1922, 136214), (2197, 119164), (3844, 68107), (4394, 59582), (5239, 49972), (8788, 29791), (10478, 24986), (12493, 20956)]