21506000

素因数分解:

$2^4\times 5^3\times {\mathrm{10753}}^1$

素因数の和:10776

約数の個数: 40

約数和(自身を含む): 52006344

約数和(自身を除く): 30500344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10753, 21506, 43012, 53765, 86024, 107530, 172048, 215060, 268825, 430120, 537650, 860240, 1075300, 1344125, 2150600, 2688250, 4301200, 5376500, 10753000, 21506000]

約数ペア:

[(1, 21506000), (2, 10753000), (4, 5376500), (5, 4301200), (8, 2688250), (10, 2150600), (16, 1344125), (20, 1075300), (25, 860240), (40, 537650), (50, 430120), (80, 268825), (100, 215060), (125, 172048), (200, 107530), (250, 86024), (400, 53765), (500, 43012), (1000, 21506), (2000, 10753)]