21252560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37951}}^1$

素因数の和:37971

約数の個数: 40

約数和(自身を含む): 56472576

約数和(自身を除く): 35220016

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37951, 75902, 151804, 189755, 265657, 303608, 379510, 531314, 607216, 759020, 1062628, 1328285, 1518040, 2125256, 2656570, 3036080, 4250512, 5313140, 10626280, 21252560]

約数ペア:

[(1, 21252560), (2, 10626280), (4, 5313140), (5, 4250512), (7, 3036080), (8, 2656570), (10, 2125256), (14, 1518040), (16, 1328285), (20, 1062628), (28, 759020), (35, 607216), (40, 531314), (56, 379510), (70, 303608), (80, 265657), (112, 189755), (140, 151804), (280, 75902), (560, 37951)]