128761731

素因数分解:

$3^4\times 7^1\times {\mathrm{227093}}^1$

素因数の和:227112

約数の個数: 20

約数和(自身を含む): 219826992

約数和(自身を除く): 91065261

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 227093, 681279, 1589651, 2043837, 4768953, 6131511, 14306859, 18394533, 42920577, 128761731]

約数ペア:

[(1, 128761731), (3, 42920577), (7, 18394533), (9, 14306859), (21, 6131511), (27, 4768953), (63, 2043837), (81, 1589651), (189, 681279), (567, 227093)]