156742857

素因数分解:

$3^4\times {\mathrm{821}}^1\times {\mathrm{2357}}^1$

素因数の和:3190

約数の個数: 20

約数和(自身を含む): 234531396

約数和(自身を除く): 77788539

約数列:

[1, 3, 9, 27, 81, 821, 2357, 2463, 7071, 7389, 21213, 22167, 63639, 66501, 190917, 1935097, 5805291, 17415873, 52247619, 156742857]

約数ペア:

[(1, 156742857), (3, 52247619), (9, 17415873), (27, 5805291), (81, 1935097), (821, 190917), (2357, 66501), (2463, 63639), (7071, 22167), (7389, 21213)]