20496784

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 50282496

約数和(自身を除く): 29785712

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 127, 131, 154, 176, 254, 262, 308, 508, 524, 616, 889, 917, 1016, 1048, 1232, 1397, 1441, 1778, 1834, 2032, 2096, 2794, 2882, 3556, 3668, 5588, 5764, 7112, 7336, 9779, 10087, 11176, 11528, 14224, 14672, 16637, 19558, 20174, 22352, 23056, 33274, 39116, 40348, 66548, 78232, 80696, 116459, 133096, 156464, 161392, 183007, 232918, 266192, 366014, 465836, 732028, 931672, 1281049, 1464056, 1863344, 2562098, 2928112, 5124196, 10248392, 20496784]

約数ペア:

[(1, 20496784), (2, 10248392), (4, 5124196), (7, 2928112), (8, 2562098), (11, 1863344), (14, 1464056), (16, 1281049), (22, 931672), (28, 732028), (44, 465836), (56, 366014), (77, 266192), (88, 232918), (112, 183007), (127, 161392), (131, 156464), (154, 133096), (176, 116459), (254, 80696), (262, 78232), (308, 66548), (508, 40348), (524, 39116), (616, 33274), (889, 23056), (917, 22352), (1016, 20174), (1048, 19558), (1232, 16637), (1397, 14672), (1441, 14224), (1778, 11528), (1834, 11176), (2032, 10087), (2096, 9779), (2794, 7336), (2882, 7112), (3556, 5764), (3668, 5588)]