20178848680

素因数分解:

$2^3\times 5^1\times {\mathrm{504471217}}^1$

素因数の和:504471228

約数の個数: 16

約数和(自身を含む): 45402409620

約数和(自身を除く): 25223560940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504471217, 1008942434, 2017884868, 2522356085, 4035769736, 5044712170, 10089424340, 20178848680]

約数ペア:

[(1, 20178848680), (2, 10089424340), (4, 5044712170), (5, 4035769736), (8, 2522356085), (10, 2017884868), (20, 1008942434), (40, 504471217)]