18020319160

素因数分解:

$2^3\times 5^1\times {\mathrm{450507979}}^1$

素因数の和:450507990

約数の個数: 16

約数和(自身を含む): 40545718200

約数和(自身を除く): 22525399040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450507979, 901015958, 1802031916, 2252539895, 3604063832, 4505079790, 9010159580, 18020319160]

約数ペア:

[(1, 18020319160), (2, 9010159580), (4, 4505079790), (5, 3604063832), (8, 2252539895), (10, 1802031916), (20, 901015958), (40, 450507979)]