21037536008

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{5166389}}^1$

素因数の和:5166904

約数の個数: 16

約数和(自身を含む): 39522883500

約数和(自身を除く): 18485347492

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 5166389, 10332778, 20665556, 41331112, 2629692001, 5259384002, 10518768004, 21037536008]

約数ペア:

[(1, 21037536008), (2, 10518768004), (4, 5259384002), (8, 2629692001), (509, 41331112), (1018, 20665556), (2036, 10332778), (4072, 5166389)]