257435157

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1\times {\mathrm{547}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 399680512

約数和(自身を除く): 142245355

約数列:

[1, 3, 7, 21, 73, 219, 307, 511, 547, 921, 1533, 1641, 2149, 3829, 6447, 11487, 22411, 39931, 67233, 119793, 156877, 167929, 279517, 470631, 503787, 838551, 1175503, 3526509, 12258817, 36776451, 85811719, 257435157]

約数ペア:

[(1, 257435157), (3, 85811719), (7, 36776451), (21, 12258817), (73, 3526509), (219, 1175503), (307, 838551), (511, 503787), (547, 470631), (921, 279517), (1533, 167929), (1641, 156877), (2149, 119793), (3829, 67233), (6447, 39931), (11487, 22411)]