21505236470

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{126501391}}^1$

素因数の和:126501415

約数の個数: 16

約数和(自身を含む): 40986451008

約数和(自身を除く): 19481214538

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 126501391, 253002782, 632506955, 1265013910, 2150523647, 4301047294, 10752618235, 21505236470]

約数ペア:

[(1, 21505236470), (2, 10752618235), (5, 4301047294), (10, 2150523647), (17, 1265013910), (34, 632506955), (85, 253002782), (170, 126501391)]