21290136

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{359}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 61171200

約数和(自身を除く): 39881064

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 353, 359, 706, 718, 1059, 1077, 1412, 1436, 2118, 2154, 2471, 2513, 2824, 2872, 4236, 4308, 4942, 5026, 7413, 7539, 8472, 8616, 9884, 10052, 14826, 15078, 19768, 20104, 29652, 30156, 59304, 60312, 126727, 253454, 380181, 506908, 760362, 887089, 1013816, 1520724, 1774178, 2661267, 3041448, 3548356, 5322534, 7096712, 10645068, 21290136]

約数ペア:

[(1, 21290136), (2, 10645068), (3, 7096712), (4, 5322534), (6, 3548356), (7, 3041448), (8, 2661267), (12, 1774178), (14, 1520724), (21, 1013816), (24, 887089), (28, 760362), (42, 506908), (56, 380181), (84, 253454), (168, 126727), (353, 60312), (359, 59304), (706, 30156), (718, 29652), (1059, 20104), (1077, 19768), (1412, 15078), (1436, 14826), (2118, 10052), (2154, 9884), (2471, 8616), (2513, 8472), (2824, 7539), (2872, 7413), (4236, 5026), (4308, 4942)]