19716880

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1277}}^1$

素因数の和:1483

約数の個数: 40

約数和(自身を含む): 46115352

約数和(自身を除く): 26398472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1277, 1544, 1930, 2554, 3088, 3860, 5108, 6385, 7720, 10216, 12770, 15440, 20432, 25540, 51080, 102160, 246461, 492922, 985844, 1232305, 1971688, 2464610, 3943376, 4929220, 9858440, 19716880]

約数ペア:

[(1, 19716880), (2, 9858440), (4, 4929220), (5, 3943376), (8, 2464610), (10, 1971688), (16, 1232305), (20, 985844), (40, 492922), (80, 246461), (193, 102160), (386, 51080), (772, 25540), (965, 20432), (1277, 15440), (1544, 12770), (1930, 10216), (2554, 7720), (3088, 6385), (3860, 5108)]