21621250

素因数分解:

$2^1\times 5^4\times 7^2\times {\mathrm{353}}^1$

素因数の和:389

約数の個数: 60

約数和(自身を含む): 47277054

約数和(自身を除く): 25655804

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 125, 175, 245, 250, 350, 353, 490, 625, 706, 875, 1225, 1250, 1750, 1765, 2450, 2471, 3530, 4375, 4942, 6125, 8750, 8825, 12250, 12355, 17297, 17650, 24710, 30625, 34594, 44125, 61250, 61775, 86485, 88250, 123550, 172970, 220625, 308875, 432425, 441250, 617750, 864850, 1544375, 2162125, 3088750, 4324250, 10810625, 21621250]

約数ペア:

[(1, 21621250), (2, 10810625), (5, 4324250), (7, 3088750), (10, 2162125), (14, 1544375), (25, 864850), (35, 617750), (49, 441250), (50, 432425), (70, 308875), (98, 220625), (125, 172970), (175, 123550), (245, 88250), (250, 86485), (350, 61775), (353, 61250), (490, 44125), (625, 34594), (706, 30625), (875, 24710), (1225, 17650), (1250, 17297), (1750, 12355), (1765, 12250), (2450, 8825), (2471, 8750), (3530, 6125), (4375, 4942)]