21897148

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1399}}^1$

素因数の和:1466

約数の個数: 48

約数和(自身を含む): 48294400

約数和(自身を除く): 26397252

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1399, 2236, 2798, 3913, 5596, 7826, 9793, 15652, 18187, 19586, 36374, 39172, 60157, 72748, 120314, 127309, 240628, 254618, 421099, 509236, 782041, 842198, 1564082, 1684396, 3128164, 5474287, 10948574, 21897148]

約数ペア:

[(1, 21897148), (2, 10948574), (4, 5474287), (7, 3128164), (13, 1684396), (14, 1564082), (26, 842198), (28, 782041), (43, 509236), (52, 421099), (86, 254618), (91, 240628), (172, 127309), (182, 120314), (301, 72748), (364, 60157), (559, 39172), (602, 36374), (1118, 19586), (1204, 18187), (1399, 15652), (2236, 9793), (2798, 7826), (3913, 5596)]