209260880

素因数分解:

$2^4\times 5^1\times {\mathrm{2615761}}^1$

素因数の和:2615774

約数の個数: 20

約数和(自身を含む): 486531732

約数和(自身を除く): 277270852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2615761, 5231522, 10463044, 13078805, 20926088, 26157610, 41852176, 52315220, 104630440, 209260880]

約数ペア:

[(1, 209260880), (2, 104630440), (4, 52315220), (5, 41852176), (8, 26157610), (10, 20926088), (16, 13078805), (20, 10463044), (40, 5231522), (80, 2615761)]