256851

素因数分解:

$3^5\times 7^1\times {\mathrm{151}}^1$

素因数の和:173

約数の個数: 24

約数和(自身を含む): 442624

約数和(自身を除く): 185773

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 151, 189, 243, 453, 567, 1057, 1359, 1701, 3171, 4077, 9513, 12231, 28539, 36693, 85617, 256851]

約数ペア:

[(1, 256851), (3, 85617), (7, 36693), (9, 28539), (21, 12231), (27, 9513), (63, 4077), (81, 3171), (151, 1701), (189, 1359), (243, 1057), (453, 567)]