128214862713

素因数分解:

$3^3\times 7^1\times {\mathrm{678385517}}^1$

素因数の和:678385533

約数の個数: 16

約数和(自身を含む): 217083365760

約数和(自身を除く): 88868503047

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 678385517, 2035156551, 4748698619, 6105469653, 14246095857, 18316408959, 42738287571, 128214862713]

約数ペア:

[(1, 128214862713), (3, 42738287571), (7, 18316408959), (9, 14246095857), (21, 6105469653), (27, 4748698619), (63, 2035156551), (189, 678385517)]