217620999

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{20509}}^1$

素因数の和:20652

約数の個数: 20

約数和(自身を含む): 327585720

約数和(自身を除く): 109964721

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 3537, 10611, 20509, 61527, 184581, 553743, 1661229, 2686679, 8060037, 24180111, 72540333, 217620999]

約数ペア:

[(1, 217620999), (3, 72540333), (9, 24180111), (27, 8060037), (81, 2686679), (131, 1661229), (393, 553743), (1179, 184581), (3537, 61527), (10611, 20509)]