20899809

素因数分解:

$3^3\times 7^1\times {\mathrm{110581}}^1$

素因数の和:110597

約数の個数: 16

約数和(自身を含む): 35386240

約数和(自身を除く): 14486431

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 110581, 331743, 774067, 995229, 2322201, 2985687, 6966603, 20899809]

約数ペア:

[(1, 20899809), (3, 6966603), (7, 2985687), (9, 2322201), (21, 995229), (27, 774067), (63, 331743), (189, 110581)]