21043204

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4447}}^1$

素因数の和:4484

約数の個数: 36

約数和(自身を含む): 45583104

約数和(自身を除く): 24539900

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4447, 4732, 8894, 17788, 31129, 57811, 62258, 115622, 124516, 231244, 404677, 751543, 809354, 1503086, 1618708, 3006172, 5260801, 10521602, 21043204]

約数ペア:

[(1, 21043204), (2, 10521602), (4, 5260801), (7, 3006172), (13, 1618708), (14, 1503086), (26, 809354), (28, 751543), (52, 404677), (91, 231244), (169, 124516), (182, 115622), (338, 62258), (364, 57811), (676, 31129), (1183, 17788), (2366, 8894), (4447, 4732)]