21054500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2477}}^1$

素因数の和:2513

約数の個数: 48

約数和(自身を含む): 48707568

約数和(自身を除く): 27653068

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 2125, 2477, 4250, 4954, 8500, 9908, 12385, 24770, 42109, 49540, 61925, 84218, 123850, 168436, 210545, 247700, 309625, 421090, 619250, 842180, 1052725, 1238500, 2105450, 4210900, 5263625, 10527250, 21054500]

約数ペア:

[(1, 21054500), (2, 10527250), (4, 5263625), (5, 4210900), (10, 2105450), (17, 1238500), (20, 1052725), (25, 842180), (34, 619250), (50, 421090), (68, 309625), (85, 247700), (100, 210545), (125, 168436), (170, 123850), (250, 84218), (340, 61925), (425, 49540), (500, 42109), (850, 24770), (1700, 12385), (2125, 9908), (2477, 8500), (4250, 4954)]