20984392

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 49805280

約数和(自身を除く): 28820888

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 44, 52, 68, 83, 88, 104, 136, 143, 166, 169, 187, 221, 286, 332, 338, 374, 442, 572, 664, 676, 748, 884, 913, 1079, 1144, 1352, 1411, 1496, 1768, 1826, 1859, 2158, 2431, 2822, 2873, 3652, 3718, 4316, 4862, 5644, 5746, 7304, 7436, 8632, 9724, 11288, 11492, 11869, 14027, 14872, 15521, 18343, 19448, 22984, 23738, 28054, 31042, 31603, 36686, 47476, 56108, 62084, 63206, 73372, 94952, 112216, 124168, 126412, 146744, 154297, 201773, 238459, 252824, 308594, 403546, 476918, 617188, 807092, 953836, 1234376, 1614184, 1907672, 2623049, 5246098, 10492196, 20984392]

約数ペア:

[(1, 20984392), (2, 10492196), (4, 5246098), (8, 2623049), (11, 1907672), (13, 1614184), (17, 1234376), (22, 953836), (26, 807092), (34, 617188), (44, 476918), (52, 403546), (68, 308594), (83, 252824), (88, 238459), (104, 201773), (136, 154297), (143, 146744), (166, 126412), (169, 124168), (187, 112216), (221, 94952), (286, 73372), (332, 63206), (338, 62084), (374, 56108), (442, 47476), (572, 36686), (664, 31603), (676, 31042), (748, 28054), (884, 23738), (913, 22984), (1079, 19448), (1144, 18343), (1352, 15521), (1411, 14872), (1496, 14027), (1768, 11869), (1826, 11492), (1859, 11288), (2158, 9724), (2431, 8632), (2822, 7436), (2873, 7304), (3652, 5746), (3718, 5644), (4316, 4862)]