20005216

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:404

約数の個数: 96

約数和(自身を含む): 51383808

約数和(自身を除く): 31378592

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 32, 44, 46, 56, 77, 88, 92, 112, 154, 161, 176, 184, 224, 253, 308, 322, 352, 353, 368, 506, 616, 644, 706, 736, 1012, 1232, 1288, 1412, 1771, 2024, 2464, 2471, 2576, 2824, 3542, 3883, 4048, 4942, 5152, 5648, 7084, 7766, 8096, 8119, 9884, 11296, 14168, 15532, 16238, 19768, 27181, 28336, 31064, 32476, 39536, 54362, 56672, 56833, 62128, 64952, 79072, 89309, 108724, 113666, 124256, 129904, 178618, 217448, 227332, 259808, 357236, 434896, 454664, 625163, 714472, 869792, 909328, 1250326, 1428944, 1818656, 2500652, 2857888, 5001304, 10002608, 20005216]

約数ペア:

[(1, 20005216), (2, 10002608), (4, 5001304), (7, 2857888), (8, 2500652), (11, 1818656), (14, 1428944), (16, 1250326), (22, 909328), (23, 869792), (28, 714472), (32, 625163), (44, 454664), (46, 434896), (56, 357236), (77, 259808), (88, 227332), (92, 217448), (112, 178618), (154, 129904), (161, 124256), (176, 113666), (184, 108724), (224, 89309), (253, 79072), (308, 64952), (322, 62128), (352, 56833), (353, 56672), (368, 54362), (506, 39536), (616, 32476), (644, 31064), (706, 28336), (736, 27181), (1012, 19768), (1232, 16238), (1288, 15532), (1412, 14168), (1771, 11296), (2024, 9884), (2464, 8119), (2471, 8096), (2576, 7766), (2824, 7084), (3542, 5648), (3883, 5152), (4048, 4942)]