20767396

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1052

約数の個数: 36

約数和(自身を含む): 40664064

約数和(自身を除く): 19896668

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 991, 1612, 1982, 3964, 5239, 10478, 12883, 20956, 25766, 30721, 51532, 61442, 122884, 167479, 334958, 399373, 669916, 798746, 1597492, 5191849, 10383698, 20767396]

約数ペア:

[(1, 20767396), (2, 10383698), (4, 5191849), (13, 1597492), (26, 798746), (31, 669916), (52, 399373), (62, 334958), (124, 167479), (169, 122884), (338, 61442), (403, 51532), (676, 30721), (806, 25766), (991, 20956), (1612, 12883), (1982, 10478), (3964, 5239)]