21059920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37607}}^1$

素因数の和:37627

約数の個数: 40

約数和(自身を含む): 55960704

約数和(自身を除く): 34900784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37607, 75214, 150428, 188035, 263249, 300856, 376070, 526498, 601712, 752140, 1052996, 1316245, 1504280, 2105992, 2632490, 3008560, 4211984, 5264980, 10529960, 21059920]

約数ペア:

[(1, 21059920), (2, 10529960), (4, 5264980), (5, 4211984), (7, 3008560), (8, 2632490), (10, 2105992), (14, 1504280), (16, 1316245), (20, 1052996), (28, 752140), (35, 601712), (40, 526498), (56, 376070), (70, 300856), (80, 263249), (112, 188035), (140, 150428), (280, 75214), (560, 37607)]