21000724814

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{1217}}^1\times {\mathrm{454109}}^1$

素因数の和:455347

約数の個数: 16

約数和(自身を含む): 33186358800

約数和(自身を除く): 12185633986

約数列:

[1, 2, 19, 38, 1217, 2434, 23123, 46246, 454109, 908218, 8628071, 17256142, 552650653, 1105301306, 10500362407, 21000724814]

約数ペア:

[(1, 21000724814), (2, 10500362407), (19, 1105301306), (38, 552650653), (1217, 17256142), (2434, 8628071), (23123, 908218), (46246, 454109)]