257788504

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{23887}}^1$

素因数の和:23983

約数の個数: 32

約数和(自身を含む): 515980800

約数和(自身を除く): 258192296

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 142, 152, 284, 568, 1349, 2698, 5396, 10792, 23887, 47774, 95548, 191096, 453853, 907706, 1695977, 1815412, 3391954, 3630824, 6783908, 13567816, 32223563, 64447126, 128894252, 257788504]

約数ペア:

[(1, 257788504), (2, 128894252), (4, 64447126), (8, 32223563), (19, 13567816), (38, 6783908), (71, 3630824), (76, 3391954), (142, 1815412), (152, 1695977), (284, 907706), (568, 453853), (1349, 191096), (2698, 95548), (5396, 47774), (10792, 23887)]