19645912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1321}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 43546680

約数和(自身を除く): 23900768

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1321, 1352, 1859, 2642, 3718, 5284, 7436, 10568, 14531, 14872, 17173, 29062, 34346, 58124, 68692, 116248, 137384, 188903, 223249, 377806, 446498, 755612, 892996, 1511224, 1785992, 2455739, 4911478, 9822956, 19645912]

約数ペア:

[(1, 19645912), (2, 9822956), (4, 4911478), (8, 2455739), (11, 1785992), (13, 1511224), (22, 892996), (26, 755612), (44, 446498), (52, 377806), (88, 223249), (104, 188903), (143, 137384), (169, 116248), (286, 68692), (338, 58124), (572, 34346), (676, 29062), (1144, 17173), (1321, 14872), (1352, 14531), (1859, 10568), (2642, 7436), (3718, 5284)]