20836816

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1301}}^1$

素因数の和:1340

約数の個数: 80

約数和(自身を含む): 54246528

約数和(自身を除く): 33409712

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 286, 308, 364, 572, 616, 728, 1001, 1144, 1232, 1301, 1456, 2002, 2288, 2602, 4004, 5204, 8008, 9107, 10408, 14311, 16016, 16913, 18214, 20816, 28622, 33826, 36428, 57244, 67652, 72856, 100177, 114488, 118391, 135304, 145712, 186043, 200354, 228976, 236782, 270608, 372086, 400708, 473564, 744172, 801416, 947128, 1302301, 1488344, 1602832, 1894256, 2604602, 2976688, 5209204, 10418408, 20836816]

約数ペア:

[(1, 20836816), (2, 10418408), (4, 5209204), (7, 2976688), (8, 2604602), (11, 1894256), (13, 1602832), (14, 1488344), (16, 1302301), (22, 947128), (26, 801416), (28, 744172), (44, 473564), (52, 400708), (56, 372086), (77, 270608), (88, 236782), (91, 228976), (104, 200354), (112, 186043), (143, 145712), (154, 135304), (176, 118391), (182, 114488), (208, 100177), (286, 72856), (308, 67652), (364, 57244), (572, 36428), (616, 33826), (728, 28622), (1001, 20816), (1144, 18214), (1232, 16913), (1301, 16016), (1456, 14311), (2002, 10408), (2288, 9107), (2602, 8008), (4004, 5204)]