20999600

素因数分解:

$2^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1117}}^1$

素因数の和:1182

約数の個数: 60

約数和(自身を含む): 51571104

約数和(自身を除く): 30571504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 188, 200, 235, 376, 400, 470, 752, 940, 1117, 1175, 1880, 2234, 2350, 3760, 4468, 4700, 5585, 8936, 9400, 11170, 17872, 18800, 22340, 27925, 44680, 52499, 55850, 89360, 104998, 111700, 209996, 223400, 262495, 419992, 446800, 524990, 839984, 1049980, 1312475, 2099960, 2624950, 4199920, 5249900, 10499800, 20999600]

約数ペア:

[(1, 20999600), (2, 10499800), (4, 5249900), (5, 4199920), (8, 2624950), (10, 2099960), (16, 1312475), (20, 1049980), (25, 839984), (40, 524990), (47, 446800), (50, 419992), (80, 262495), (94, 223400), (100, 209996), (188, 111700), (200, 104998), (235, 89360), (376, 55850), (400, 52499), (470, 44680), (752, 27925), (940, 22340), (1117, 18800), (1175, 17872), (1880, 11170), (2234, 9400), (2350, 8936), (3760, 5585), (4468, 4700)]