209486654

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{19993}}^1$

素因数の和:20052

約数の個数: 24

約数和(自身を含む): 351254592

約数和(自身を除く): 141767938

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 5239, 10478, 19993, 39986, 259909, 519818, 619783, 1239566, 3378817, 6757634, 8057179, 16114358, 104743327, 209486654]

約数ペア:

[(1, 209486654), (2, 104743327), (13, 16114358), (26, 8057179), (31, 6757634), (62, 3378817), (169, 1239566), (338, 619783), (403, 519818), (806, 259909), (5239, 39986), (10478, 19993)]