209635880

素因数分解:

$2^3\times 5^1\times {\mathrm{5240897}}^1$

素因数の和:5240908

約数の個数: 16

約数和(自身を含む): 471680820

約数和(自身を除く): 262044940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5240897, 10481794, 20963588, 26204485, 41927176, 52408970, 104817940, 209635880]

約数ペア:

[(1, 209635880), (2, 104817940), (4, 52408970), (5, 41927176), (8, 26204485), (10, 20963588), (20, 10481794), (40, 5240897)]