209408240

素因数分解:

$2^4\times 5^1\times {\mathrm{2617603}}^1$

素因数の和:2617616

約数の個数: 20

約数和(自身を含む): 486874344

約数和(自身を除く): 277466104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2617603, 5235206, 10470412, 13088015, 20940824, 26176030, 41881648, 52352060, 104704120, 209408240]

約数ペア:

[(1, 209408240), (2, 104704120), (4, 52352060), (5, 41881648), (8, 26176030), (10, 20940824), (16, 13088015), (20, 10470412), (40, 5235206), (80, 2617603)]