21653128

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12473}}^1$

素因数の和:12517

約数の個数: 32

約数和(自身を含む): 47900160

約数和(自身を除く): 26247032

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 12473, 24946, 49892, 87311, 99784, 174622, 349244, 386663, 698488, 773326, 1546652, 2706641, 3093304, 5413282, 10826564, 21653128]

約数ペア:

[(1, 21653128), (2, 10826564), (4, 5413282), (7, 3093304), (8, 2706641), (14, 1546652), (28, 773326), (31, 698488), (56, 386663), (62, 349244), (124, 174622), (217, 99784), (248, 87311), (434, 49892), (868, 24946), (1736, 12473)]